main{
    position: relative; 
    height: 707px;
    background:  rgba(255, 255, 255, 0.8);
    border-radius: 10px;
}

.message-input{
    position: absolute;
    bottom: 0;
    left: calc(50% - 219px);
    width: 439px;
    height: 200px;
}

#input-text{
    resize: none;
    padding: 10px;
    height: 148px;
    width: 439px;
    font-size: 25px;
    border-radius: 10px;
}

#submit{
    display: block;
    float: right;
    border-radius:10px;
    width: 80px;
    height: 40px;
    border: none;
}

#submit:hover{
    border: 1px solid black;
    outline: 1px solid rgba(71, 77, 78, 0.8);
    cursor: pointer;
}

.message-wall{
    position: relative;
    background-color: rgb(165, 165, 165);
    overflow: hidden;
    width: 100%;
    height: 60%;
    border-radius: 10px;
}

.message-wall .message-show{
    position: absolute;
    display: block;
    border: 1px solid black;
    padding: 3px 10px;
    right: -100px;
    height: 40px;
    font-size: 25px;
    border-radius: 10px;
    /* background-color: chartreuse; */
}

.message-wall #message-show{
    cursor: pointer;
    border: 0;
    outline: 1px solid green;
    opacity: 1 !important;
    box-shadow:  0 2px 5px 0 rgb(0 0 0 / 16%), 0 7px 10px 0 rgb(0 0 0 / 12%);
}

.footer{
    margin: 0 auto;
}