body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    font-family: Arial, Helvetica, sans-serif;
}

#nav {    
    background: #333333;
    padding: 10px;
    margin-bottom: 2vw;
    color: #FFFFFF;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
    font-size: 24px;
}

.Appname {font-weight: 700;}

#nav a {
    color: #FFFFFF;
    text-decoration: underline;
}

/** ACTIONS **/
#start {
    display: inline-block;
    text-align: center;
    padding: 5vw 5vw;
    width: 50vw;
    margin-left: 25vw;
    margin-top: 25vh;
    background-color: #2196F3;
    color: #fff;
    font-size: 3rem;
    font-weight: 700;
    -moz-box-shadow: 4px 4px 0px 2px #303F9F;
    -webkit-box-shadow: 4px 4px 0px 2px #303F9F;
    -o-box-shadow: 4px 4px 0px 2px #303F9F;
    box-shadow: 4px 4px 0px 2px   #303F9F;
    filter:progid:DXImageTransform.Microsoft.Shadow(color=  #303F9F, Direction=134, Strength=0);
    -moz-border-radius: 10px;
    -webkit-border-radius: 10px;
    border-radius: 10px;
}

#choices {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    margin: 1vw;
}

.intro {
    font-size: 1.5rem;
    margin: 10vw;
    color: #333333;
}

.choiceCard {
    font-weight: bold;
    padding: 5vw 5vw;
    font-size: 3rem;
    width: 35vw;
    border-radius: 10px;
    text-align: center;
    color: #FFFFFF;
    margin: 2vw;
    vertical-align: middle;
    display: inline-block;
}

.choiceCard:nth-child(1) {
    background-color: #2196F3;
    -moz-box-shadow: 4px 4px 0px 2px #303F9F;
    -webkit-box-shadow: 4px 4px 0px 2px #303F9F;
    -o-box-shadow: 4px 4px 0px 2px #303F9F;
    box-shadow: 4px 4px 0px 2px   #303F9F;
    filter:progid:DXImageTransform.Microsoft.Shadow(color=  #303F9F, Direction=134, Strength=0);
    -moz-border-radius: 10px;
    -webkit-border-radius: 10px;
    border-radius: 10px;
}

.choiceCard:nth-child(2) {
    background-color: #FF9800;

    -moz-box-shadow: 4px 4px 0px 2px #FF5722;
    -webkit-box-shadow: 4px 4px 0px 2px #FF5722;
    -o-box-shadow: 4px 4px 0px 2px #FF5722;
    box-shadow: 4px 4px 0px 2px   #FF5722;
    filter:progid:DXImageTransform.Microsoft.Shadow(color=  #FF5722, Direction=134, Strength=0);
    -moz-border-radius: 10px;
    -webkit-border-radius: 10px;
    border-radius: 10px;
}

.choiceCard:nth-child(3) {
    background-color: #BA68C8;

    -moz-box-shadow: 4px 4px 0px 2px #7B1FA2;
    -webkit-box-shadow: 4px 4px 0px 2px #7B1FA2;
    -o-box-shadow: 4px 4px 0px 2px #7B1FA2;
    box-shadow: 4px 4px 0px 2px   #7B1FA2;
    filter:progid:DXImageTransform.Microsoft.Shadow(color=  #7B1FA2, Direction=134, Strength=0);
    -moz-border-radius: 10px;
    -webkit-border-radius: 10px;
    border-radius: 10px;
}

.choiceCard:nth-child(4) {
    background-color: #607D8B;
    -moz-box-shadow: 4px 4px 0px 2px #455A64;
    -webkit-box-shadow: 4px 4px 0px 2px #455A64;
    -o-box-shadow: 4px 4px 0px 2px #455A64;
    box-shadow: 4px 4px 0px 2px   #455A64;
    filter:progid:DXImageTransform.Microsoft.Shadow(color=  #455A64, Direction=134, Strength=0);
    -moz-border-radius: 10px;
    -webkit-border-radius: 10px;
    border-radius: 10px;
}

.choiceCard:active {
    color: #333333;
    box-shadow: none;
    transition: ease;
}  

.audio {
    background: #2196F3;
    border-radius: 5px;
    border: 1px solid #303F9F;
    padding: 10px 10px 0px 10px;
}

.audio:active{
    background-color: #303F9F;
} 

svg{
    width: 25px;
    height: 25px;
    fill: #FFFFFF;
}