.wrapper {
    /* Text margin */
    margin: auto;
    width: 60%;
    padding: 10px;
    perspective: 1000px;
}

.text-align-center {
    text-align: center;
}

button {
    color: white;
    background-color: blue;
    border-radius: 5px;
    border: 1px solid black;
    padding: 10px;
    box-shadow: 1px 1px 5px 0px rgba(0,0,0,0.75);
    -webkit-box-shadow: 1px 3px 5px 0px rgba(0,0,0,0.75);
    -moz-box-shadow: 1px 3px 5px 0px rgba(0,0,0,0.75);
    cursor: pointer;
}

button:active {
    background-color: #00008B;
}

button + button {
    margin-left: 10px;
}

input {
    width: 100%;
    margin: 5px;
    border-radius: 5px;
    border: 1px solid black;
    padding: 5px

}

.row {
    display: flex;
}

.column {
    flex: 50%;
}

.thumb {
    border: 1px solid black;
    border-radius: 5px;
    background: #F5F5F5;
}