.subject-container {
    margin: 20px;
}

.subject-box {
    display: inline-block;
    width: 300px;
    height: 570px;
    margin-right: 20px;
    background-color: #f2f2f2;
    border: 1px solid #ccc;
    text-align: center;
    vertical-align: top;
    box-sizing: border-box;
}
