app/assets/stylesheets/buttons.scss
#buttons, a.button {
float: left;
}
#buttons {
display: flex;
align-items: center;
justify-content: center;
margin-left: 1em;
}
.button {
text-decoration: none;
cursor: pointer;
color: #333;
background: linear-gradient(#fdfdfd, #f0f0f0, #e9e9e9, #dadada);
border: 1px solid #999;
border-radius: 1px;
margin-right: 10px;
padding: .3em;
}
.button:hover {
border-color: #777;
}