#calcdiv {
    display: flex;
    flex-direction: column;
    max-width: 678px;
    margin-left: auto;
    margin-right: auto;
    padding: 24px;
    background-color: aliceblue;
}
#calcdiv .input {
    flex: 1 1 33%;
}
#calcdiv .input input {
    width: 100%;
}
#results {
    flex: 1 1 66%;
    padding: 12px;
}
#resultvalue {
    font-size: 48px;
    line-height: 1.66em;
    text-align: center;
}
#resultbar {
    background-image: linear-gradient(to right,yellow 25%,green 40%,brown 70%,red 100%);
    display: flex;
    padding: 1px;
}
#resultbar .bar {
    background-color: #FFF;
    display: inline-block;
    height: 10px;
    margin-left: auto;
}
#explanation {
    background-color: aliceblue;
    max-width: 724px;
    margin: 0 auto;
}
#explanation h2 {
    padding: 0 6px;
    margin-top: 0;
    text-align: center;
    margin-bottom: 0;
}
#explanation .tab {
    background-color: lavender;
    padding: 4px;
}
.tablist {
    display: flex;
    list-style: none;
    padding-left: 0;
    margin: 12px 0 0 0;
    
}

.tablist li {
    display: block;
    flex: 1 1 20%;
    text-align: center;
    border: 5px solid #fff;
    border-top: 12px solid #fff;
    position: relative;
    font-size: 14px;
    cursor: pointer;
}

.tablist li.clicked {
    border-bottom-color: #e6e6fa;
    background: #e6e6fa
}
.tablist li.active:before {
    content: "";
    display: block;
    height: 0px;
    width: 0px;
    position: absolute;
    background-color: #ec3723;
    top: -12px;
    border-top: 12px solid #ec3723;
    border-left: 12px solid #FFF;
    border-right: 12px solid #FFF;
    left: 50%;
    transform: translateX(-50%);
}
@media screen and (min-width: 678px) {
    #calcdiv {
        flex-direction: row;
    }
}