body{
    display: flex;
    justify-content: space-between;
    font-family: sans-serif;
}

.left{
    height: 100%; 
    width: 75%; 
    background: white;
}

.right{
    height: 100%;
    width: 25%;
    background: green;
    border-left: 2px solid rgba(0, 0, 0, 0.5);
    min-width: 300px;
}

.top_bar{
    height: 60px;
    display: flex;
    background: linear-gradient(0deg, #bbb, #ddd);
    flex-direction: row-reverse;
    align-content: center;
    align-items: center;
    border-bottom: 2px solid rgba(0, 0, 0, 0.15);
}

.top_bar label{
    margin-right: 20px; 
    font-size: 25px; 
    font-family: cursive;
}

.main_box{
    height: Calc(100% - 120px);
    background: radial-gradient(#fff, #fff, #fff, #eee, #eee);
    display: grid;
    direction: rtl;
    box-sizing: border-box;
    padding: 20px;
    align-content: start;
    grid-gap: 10px;
    overflow: auto;
}

.bottom_bar{
    height: 60px;
    background: linear-gradient(0deg, #bbb, #ddd);
    box-sizing: border-box;
    padding: 8px;
    border-top: 2px solid rgba(0, 0, 0, 0.15);
}

.bottom_bar button{
    height: 40px;
    width: 40px;
    background: rgba(220, 220, 220);
    border-radius: 50%;
    outline: none;
    border: 1px solid rgba(0, 0, 0, 0.2);
    font-size: 20px;
    line-height: 35px;
    font-family: emoji;
    cursor: pointer;
}

.bottom_bar button:hover{
    background: rgba(200, 200, 200);
}

.bottom_bar button:active{
    background: rgba(190, 190, 190);
}

.bottom_bar input#newmsg_text{
    height: 100%;
    width: Calc(100% - 100px);
    background: transparent;
    border: 0px;
    outline: none;
    padding: 10px;
    font-size: 20px;
    resize: none;
    display: inline-table;
}

.msg_bubble{
    height: fit-content;
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: flex-end;
    padding-bottom: 10px;
}

.msg_bubble.incoming{
    direction: ltr;;
}

.profile_photo{
    height: 50px;
    width: 50px;
    background: royalblue;
    border-radius: 50%;
    text-align: center;
    line-height: 45px;
    font-size: 25px;
    color: white;
    min-width: 50px;
    min-height: 50px;
}

.msg_bubble.incoming .profile_photo{
    background: darkolivegreen;
    color: white;
}

.msg_bubble .msg_body{
    margin-right: 15px;
    margin-left: 15px;
    max-width: Calc(100% - 130px);
    font-size: 20px;
    background: honeydew;
    padding: 10px;
    border-radius: 15px;
    box-sizing: border-box;
    direction: rtl;
}

.msg_bubble.incoming .msg_body{
    background: aliceblue;
}

.msg_bubble .msg_body p{
    display: contents;
}

.msg_bubble .msg_body span{
    position: relative;
    top: -10px;
    color: royalblue;
}

.msg_bubble.incoming .msg_body span{
    color: darkolivegreen;
}

*{
    user-select: none;
}

p{
    user-select: all;
}

body.mobile-ui .left{
    width: 100%
}

body.mobile-ui .top_bar{
    height: 180px;
}

body.mobile-ui .top_bar label{
    font-size: 75px;
}

body.mobile-ui .main_box{
    height: Calc(100% - 360px);
}

body.mobile-ui .profile_photo{
    height: 100px;
    width: 100px;
    font-size: 50px;
    line-height: 90px;
}

body.mobile-ui .msg_bubble .msg_body{
    font-size: 60px;
}

body.mobile-ui .bottom_bar{
    height: 180px;
}

body.mobile-ui .bottom_bar button{
    font-size: 60px;
    width: 120px;
    height: 120px;
}

body.mobile-ui .bottom_bar input#newmsg_text{
    width: Calc(100% - 250px);
    font-size: 60px;
}

body.mobile-ui .right{
    display: none;
}

body.mobile-ui .is-typing.main_box {
    height: Calc((100% - 360px) / 3) !important;
    transition: .2s;
}