.flex {
display: flex;
flex-wrap: wrap;
align-items: flex-start;
justify-content: space-around;
}
.mdl-card {
margin: 0.5em;
.key {
width: 100%;
height: 6em;
code {
background-color: #333;
color: #fff;
padding: 0.1em;
img {
max-width: 20em;