.button {
    background: linear-gradient(to bottom, #A9A9A9, #99999999);
    margin: 50px;
    padding: 10px;
    width: 200px;
    border-radius: 25px;
    text-align: center;
    vertical-align: center;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    font-family: helvetica;
    font-size: 20px;
    cursor: pointer;
}

.button:hover {
    background: #666666;
}

.button:active {
  transform: translateY(0.1rem) scale(0.98);
  transition: all 0.15s ease-out;
}

.button-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto;
}

.game-content-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 2px;
    paddings: 0px;
    flex-wrap: wrap;
}

div.game-content-container div.button {
    margin: 10px;
}

.checked {
    border: 5px;
    border-style: solid;
    border-color: #00AA00;
}

.checked:before {
    content: '\2713';
    display: inline-block;
    color: #00AA00;
    padding: 0 6px 0 0;
}

.focused {
    @extend .checked
}