page.css

body {
    margin:0px;
    padding:0px;
    background-color: #ffffff;
}

.header {    
    display:flex;
    flex-wrap: wrap;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    width:100%;
    position: fixed;
    padding:10px;
    background: linear-gradient( #5bc4bc, #01a9e1);
    z-index:100;
    box-shadow: 0px 5px 5px #00222266;
}

.header > span {
    font-weight: bold;
    color: black;
    text-transform: uppercase;
    color: #ffffff;
    text-shadow: 3px 3px 3px #000000ff;
    font-size: 24px;
}

.header > div {
    display: flex;
    flex-direction: row;
    align-items: center;
    margin-right: 10px;
}

.header > div > span {
    font-weight: bold;
    color: #ffffff;
    font-size:16px;
    text-shadow: 3px 3px 3px #00000088;
}

.header input {
    width:20px;
    height:20px;
}

.header > button {
    color:white;
    background:linear-gradient(#01a9e1, #5bc4bc);
    border-width:0px;
    border-radius:5px;
    padding:10px;
    font-weight: bold;
    cursor:pointer;
    box-shadow: 2px 2px #00000066;
    margin-right: 20px;
    font-size:16px;
    text-shadow: 2px 2px 2px #00000088;
}

.header > button:hover {
    background:linear-gradient( #5bc4bc,#01a9e1);
    box-shadow: 2px 2px #00000066;
}

.container {
    display: flex;
    flex-wrap: wrap;
    flex-direction: row;
    justify-content: center;
    align-items: flex-start;
    padding-top: 70px;
}

.imageDiv {
    display:flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    position:relative;
    width:150px;
    height:150px;
    padding:10px;
    margin:10px;
    border-radius: 5px;
    background: linear-gradient(#01a9e1, #5bc4bc);
    box-shadow: 5px 5px 5px #00222266;
}

.imageDiv:hover {
    background: linear-gradient(#5bc4bc,#01a9e1);
    box-shadow: 10px 10px 10px #00222266;
}

.imageDiv img {
    max-width:100%;
    max-height:100%;
}

.imageDiv input {
    position:absolute;
    top:10px;
    right:10px;
    width:20px;
    height:20px;
}