body {
    background: #FFF;
    font-family: Arial, Helvetica, sans-serif;
}

.assignments{
    display: flex;
    flex-wrap: wrap;
}

.assignment {
    width: 22%;
    padding: 10px;
    margin: 10px;
    padding:20px 10px;
    background: #B9F54E;
    border-radius: 10px;
}

.assignment img {
    height: 300px; 
    width: 300px;
    margin: 10px;
    border: 4px dashed #FFF;
    display: block;
    margin: auto;
}

.assignment img:hover {
    border: 4px dashed #FE4633;
}

h1 { 
    color: blue;
    text-align: center;
}

a {
    text-decoration: none;
    color: blue;
}

a:hover {
    color: #FE4633;
}