.header {
    height: 45px;
    text-align: center;
}

.header h1 {
    line-height: 45px;
    font-size: 20px;
}

.textarea_div {
    margin-left: 10px;
    margin-right: 10px;
}

textarea {
    max-width: 1200px;
    margin-top: 50px;
}

.content {
    max-width: 1200px;
    min-width: 350px;
    min-height: 500px;
    margin-left: auto;
    margin-right: auto;
}

.border_bottom {
    border-bottom: #ebf2f9;
}

.footer {
    width: 100%;
    background-color: #ddf3f5;
    color: #cccccc;
    text-align: center;
    padding-top: 15px;
    padding-bottom: 15px;
    position: fixed;
    bottom: 0;
}