@media (orientation: landscape) {
    .map {
        float: left;
        width: 50%;
        height: 500px;
    }
    #mapcontainer {
        display: inline-block;
        width: 80%;
        height: 80%; 
    }
    #model {
        width: 35%;
        height: 250px;
    }
    .btn {
        width: 10%;
        height: 40px;
    }
    .stamp{
        clear: left;
        text-align: center;
        margin: auto;
        width: 80%;
    }
    .stamp img {
        width: 17%;
        height: 17%;
    }
}
@media (orientation: portrait) {
    .map {
        clear: left;
        width: 100%;
        height: 500px;
    }
    #mapcontainer {
        display: inline-block;
        width: 95%;
        height: 80%; 
    }
    #model {
        width: 95%;
        height: 250px;
    }
    .btn {
        width: 20%;
        height: 40px;
    }
    .stamp{
        clear: left;
        text-align: center;
        margin: auto;
    }
    .stamp img{
        width: 32%;
        height: 32%;
    }
}
.map {
    margin: 0 auto;
    text-align: center;
}
.icon-skyblue {
    filter: brightness(150%);
}
.icon-brown {
    filter: hue-rotate(175deg) brightness(90%);
}
.icon-purple {
    filter: hue-rotate(80deg);
}
.icon-orange {
    filter: hue-rotate(190deg) brightness(140%);
}
.icon-pink {
    filter: hue-rotate(120deg) brightness(140%);
}
.icon-white {
    filter: brightness(170%) grayscale(100%);
}
.icon-black {
    filter: brightness(70%) grayscale(100%);
}
.icon-darkgold {
    filter: hue-rotate(200deg) brightness(120%);
}
.icon-red {
    filter: hue-rotate(150deg);
}
.quiz {
    margin: 20px auto;
    text-align: center;
}
#WebGL-output {
    display: inline-block;
}
.ttl {
    text-align: center;
}
.question {
    margin: 10px 0 15px 0;
    font-size: large;
}
.btn {
    -webkit-appearance: none;
    appearance: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0 10px;
    padding: 0;
    border: solid 1px;
    outline: none;
    font-size: 15px;
    text-decoration: none;
    cursor: pointer;
}
#next {
    display: inline-block;
}
.choices {
    flex-wrap: wrap;
    width: 100%;
    margin: 0;
    padding-left: 0;
}
.item {
    list-style: none;
    margin: 5px;
}
#result {
    margin: 10px 0px;
    font-size: 20px;
    font-weight: bold;
}
.correct {
    color: red;
    font-size: 30px;
    font-weight: bold;
}
.incorrect {
    color: blue;
    font-size: 30px;
    font-weight: bold;
}
.commentary {
    font-size: 20px;
}
.none {
    display: none;
    margin: 10px;
}