html {
    background-color: #ccc;
    margin: 0;
    padding: 0;
}

body {
    margin: 0;
    padding: 20px;
    font: 16px/24px Verdana, Arial, sans;
}

.panel {
    border: 3px solid #bbb;
    background-color: #fff;
    width: 47%;
    position: absolute;
}

#input {
    float:left;
    left: 2%;
}

#input textarea {
    width: 100%;
    border: 0;
    margin: 0;
    padding: 0;
    height: 100%;
    overflow-y: visible;
    font: 16px/24px Verdana, Arial, sans;
}

#math {
    float:right;
    right: 2%;
}

.box {
    height: 380px;
    padding: 10px;
}

#math .box {
    height: 380px;
    padding: 10px;
}