@media screen and (min-width:1800px) {
    .lt{
        width: 1500px;
        height: auto;
        font-size: 0px;
        margin: 10px 0px;
        display: grid;
        grid-template-columns: 1fr 400px;
        grid-gap: 1px;
        background: darkblue;
        border:darkblue 1px solid;
        box-sizing: border-box;
        flex-grow: 1;
        flex-shrink: 1;
    }
    .lt_message{
        width: 100%;
        height: 100%;
        background: white;
        padding: 0px 10px 10px 10px;
        box-sizing: border-box;
        font-size: 0px;
    }
    .lt_message_gd{
        width: 100%;
        height: auto;
        margin: 10px 0px;
        font-size: 16px;
        color: maroon;
        text-align: center;
        flex-grow: 0;
        flex-shrink: 0;
        cursor: pointer;
    }
    .lt_message_z{
        width: 100%;
        height: 100%;
        max-height: 85vh;
        flex-shrink: 1;
        flex-grow: 1;
        overflow: auto;
        scrollbar-gutter: auto;
        display: flex;
        flex-wrap: wrap;
        align-content: flex-start;
    }
    .lt_message_z_to{
        width: 55%;
        height: auto;
        text-align: left;
        margin-right: 45%;
        font-size: 0px;
        margin-top: 20px;
    }
    .lt_message_z_from{
        width: 55%;
        height: auto;
        text-align: right;
        margin-left: 45%;
        font-size: 0px;
        margin-top: 20px;
    }
    .lt_message_z_fromTo_usr{
        width: 100%;
        height: auto;
        font-size: 18px;
        margin-bottom: 6px;
    }
    .lt_message_z_fromTo_mes{
        width: 100%;
        height: auto;
        padding: 10px;
        box-sizing: border-box;
        font-size: 14px;
        color: darkblue;
    }


    .lt_send{
        width: 100%;
        height: 100%;
        display: grid;
        grid-gap: 1px;
        background: darkblue;
        grid-template-rows: repeat(2,1fr) 36px;
    }
    .lt_send_abt{
        width: 100%;
        height: 100%;
        font-size: 28px;
        color: darkblue;
        background: white;
        display: flex;
        justify-content: center;
        align-items: center;
    }
    .lt_send_text{
        width: 100%;
        height: 100%;
        background: wheat;
        outline: none;
        list-style-type: none;
        border: none;
        padding: 10px;
        box-sizing: border-box;
        overflow: auto;
        margin: 0px;
        font-size: 14px;
        color: darkblue;
        scrollbar-gutter: auto;
        resize: none;
    }
    .lt_send_btn{
        width: 100%;
        height: 100%;
        display: grid;
        grid-template-columns: repeat(2,1fr);
        grid-gap: 1px;
        box-sizing: border-box;
        font-size: 0px;
    }
    .lt_send_btn_wz{
        width: 100%;
        height: 100%;
        background: darkcyan;
        color: white;
        font-size: 14px;
        display: flex;
        justify-content: center;
        align-items: center;
        cursor: pointer;
    }
    
    .lt_send_btn_img{
        width: 100%;
        height: 100%;
        background: lightseagreen;
        color: white;
        font-size: 14px;
        display: flex;
        justify-content: center;
        align-items: center;
        cursor: pointer;
    }
}

@media screen and (max-width:1800px) and (min-width:1200px) {
    .lt{
        width: 96%;
        min-width: 1200px;
        height: auto;
        font-size: 0px;
        margin: 10px 0px;
        display: grid;
        grid-template-columns: 1fr 400px;
        grid-gap: 1px;
        background: darkblue;
        border:darkblue 1px solid;
        box-sizing: border-box;
        flex-grow: 1;
        flex-shrink: 1;
    }
    .lt_message{
        width: 100%;
        height: 100%;
        background: white;
        padding: 0px 10px 10px 10px;
        box-sizing: border-box;
        font-size: 0px;
    }
    .lt_message_gd{
        width: 100%;
        height: auto;
        margin: 10px 0px;
        font-size: 16px;
        color: maroon;
        text-align: center;
        flex-grow: 0;
        flex-shrink: 0;
        cursor: pointer;
    }
    .lt_message_z{
        width: 100%;
        height: 100%;
        flex-shrink: 1;
        flex-grow: 1;
        overflow: auto;
        scrollbar-gutter: auto;
        display: flex;
        flex-wrap: wrap;
        align-content: flex-start;
        max-height: 80vh;
    }
    .lt_message_z_to{
        width: 60%;
        height: auto;
        text-align: left;
        margin-right: 40%;
        font-size: 0px;
        margin-top: 20px;
    }
    .lt_message_z_from{
        width: 60%;
        height: auto;
        text-align: right;
        margin-left: 40%;
        font-size: 0px;
        margin-top: 20px;
    }
    .lt_message_z_fromTo_usr{
        width: 100%;
        height: auto;
        font-size: 18px;
        margin-bottom: 6px;
    }
    .lt_message_z_fromTo_mes{
        width: 100%;
        height: auto;
        padding: 10px;
        box-sizing: border-box;
        font-size: 14px;
        color: darkblue;
    }

    
    .lt_send{
        width: 100%;
        height: 100%;
        display: grid;
        grid-gap: 1px;
        background: darkblue;
        grid-template-rows: repeat(2,1fr) 36px;
    }
    .lt_send_abt{
        width: 100%;
        height: 100%;
        font-size: 28px;
        color: darkblue;
        background: white;
        display: flex;
        justify-content: center;
        align-items: center;
    }
    .lt_send_text{
        width: 100%;
        height: 100%;
        background: wheat;
        outline: none;
        list-style-type: none;
        border: none;
        padding: 10px;
        box-sizing: border-box;
        overflow: auto;
        margin: 0px;
        font-size: 14px;
        color: darkblue;
        scrollbar-gutter: auto;
        resize: none;
    }
    .lt_send_btn{
        width: 100%;
        height: 100%;
        display: grid;
        grid-template-columns: repeat(2,1fr);
        grid-gap: 1px;
        box-sizing: border-box;
        font-size: 0px;
    }
    .lt_send_btn_wz{
        width: 100%;
        height: 100%;
        background: darkcyan;
        color: white;
        font-size: 14px;
        display: flex;
        justify-content: center;
        align-items: center;
        cursor: pointer;
    }
    
    .lt_send_btn_img{
        width: 100%;
        height: 100%;
        background: lightseagreen;
        color: white;
        font-size: 14px;
        display: flex;
        justify-content: center;
        align-items: center;
        cursor: pointer;
    }
}



@media screen and (max-width:1200px) and (min-width:600px) {
    .lt{
        width: 96%;
        min-width: 600px;
        height: auto;
        font-size: 0px;
        margin: 10px 0px;
        display: grid;
        grid-template-columns: 1fr 280px;
        grid-gap: 1px;
        background: darkblue;
        border:darkblue 1px solid;
        box-sizing: border-box;
        flex-grow: 1;
        flex-shrink: 1;
    }
    .lt_message{
        width: 100%;
        height: 100%;
        background: white;
        padding: 0px 10px 10px 10px;
        box-sizing: border-box;
        font-size: 0px;
    }
    .lt_message_gd{
        width: 100%;
        height: auto;
        margin: 10px 0px;
        font-size: 16px;
        color: maroon;
        text-align: center;
        flex-grow: 0;
        flex-shrink: 0;
        cursor: pointer;
    }
    .lt_message_z{
        width: 100%;
        height: 100%;
        flex-shrink: 1;
        flex-grow: 1;
        overflow: auto;
        scrollbar-gutter: auto;
        display: flex;
        flex-wrap: wrap;
        align-content: flex-start;
        max-height: 75vh;
    }
    .lt_message_z_to{
        width: 80%;
        height: auto;
        text-align: left;
        margin-right: 20%;
        font-size: 0px;
        margin-top: 20px;
    }
    .lt_message_z_from{
        width: 80%;
        height: auto;
        text-align: right;
        margin-left: 20%;
        font-size: 0px;
        margin-top: 20px;
    }
    .lt_message_z_fromTo_usr{
        width: 100%;
        height: auto;
        font-size: 18px;
        margin-bottom: 6px;
    }
    .lt_message_z_fromTo_mes{
        width: 100%;
        height: auto;
        padding: 10px;
        box-sizing: border-box;
        font-size: 14px;
        color: darkblue;
    }

    
    .lt_send{
        width: 100%;
        height: 100%;
        display: grid;
        grid-gap: 1px;
        background: darkblue;
        grid-template-rows: repeat(2,1fr) 36px;
    }
    .lt_send_abt{
        width: 100%;
        height: 100%;
        font-size: 28px;
        color: darkblue;
        background: white;
        display: flex;
        justify-content: center;
        align-items: center;
    }
    .lt_send_text{
        width: 100%;
        height: 100%;
        background: wheat;
        outline: none;
        list-style-type: none;
        border: none;
        padding: 10px;
        box-sizing: border-box;
        overflow: auto;
        margin: 0px;
        font-size: 14px;
        color: darkblue;
        scrollbar-gutter: auto;
        resize: none;
    }
    .lt_send_btn{
        width: 100%;
        height: 100%;
        display: grid;
        grid-template-columns: repeat(2,1fr);
        grid-gap: 1px;
        box-sizing: border-box;
        font-size: 0px;
    }
    .lt_send_btn_wz{
        width: 100%;
        height: 100%;
        background: darkcyan;
        color: white;
        font-size: 14px;
        display: flex;
        justify-content: center;
        align-items: center;
        cursor: pointer;
    }
    
    .lt_send_btn_img{
        width: 100%;
        height: 100%;
        background: lightseagreen;
        color: white;
        font-size: 14px;
        display: flex;
        justify-content: center;
        align-items: center;
        cursor: pointer;
    }
}



@media screen and (max-width:600px) {
    .lt{
        width: 96%;
        min-width: 310px;
        height: auto;
        font-size: 0px;
        margin: 10px 0px;
        display: grid;
        grid-template-rows: 1fr 156px;
        grid-gap: 1px;
        background: darkblue;
        border:darkblue 1px solid;
        box-sizing: border-box;
        flex-grow: 1;
        flex-shrink: 1;
    }
    .lt_message{
        width: 100%;
        height: 100%;
        background: white;
        padding: 0px 10px 10px 10px;
        box-sizing: border-box;
        font-size: 0px;
    }
    .lt_message_gd{
        width: 100%;
        height: auto;
        margin: 10px 0px;
        font-size: 16px;
        color: maroon;
        text-align: center;
        flex-grow: 0;
        flex-shrink: 0;
        cursor: pointer;
    }
    .lt_message_z{
        width: 100%;
        height: 100%;
        flex-shrink: 1;
        flex-grow: 1;
        overflow: auto;
        scrollbar-gutter: auto;
        display: flex;
        flex-wrap: wrap;
        align-content: flex-start;
        max-height: 58vh;
    }
    .lt_message_z_to{
        width: 90%;
        height: auto;
        text-align: left;
        margin-right: 10%;
        font-size: 0px;
        margin-top: 20px;
    }
    .lt_message_z_from{
        width: 90%;
        height: auto;
        text-align: right;
        margin-left: 10%;
        font-size: 0px;
        margin-top: 20px;
    }
    .lt_message_z_fromTo_usr{
        width: 100%;
        height: auto;
        font-size: 18px;
        margin-bottom: 6px;
    }
    .lt_message_z_fromTo_mes{
        width: 100%;
        height: auto;
        padding: 10px;
        box-sizing: border-box;
        font-size: 14px;
        color: darkblue;
    }

    
    .lt_send{
        width: 100%;
        height: 100%;
        display: grid;
        grid-gap: 1px;
        background: darkblue;
        grid-template-rows: 1fr 36px;
    }
    .lt_send_abt{
        width: 100%;
        height: 100%;
        font-size: 28px;
        color: darkblue;
        background: white;
        display: none;
        justify-content: center;
        align-items: center;
    }
    .lt_send_text{
        width: 100%;
        height: 100%;
        background: wheat;
        outline: none;
        list-style-type: none;
        border: none;
        padding: 10px;
        box-sizing: border-box;
        overflow: auto;
        margin: 0px;
        font-size: 14px;
        color: darkblue;
        scrollbar-gutter: auto;
        resize: none;
    }
    .lt_send_btn{
        width: 100%;
        height: 100%;
        display: grid;
        grid-template-columns: repeat(2,1fr);
        grid-gap: 1px;
        box-sizing: border-box;
        font-size: 0px;
    }
    .lt_send_btn_wz{
        width: 100%;
        height: 100%;
        background: darkcyan;
        color: white;
        font-size: 14px;
        display: flex;
        justify-content: center;
        align-items: center;
        cursor: pointer;
    }
    
    .lt_send_btn_img{
        width: 100%;
        height: 100%;
        background: lightseagreen;
        color: white;
        font-size: 14px;
        display: flex;
        justify-content: center;
        align-items: center;
        cursor: pointer;
    }
}