html{
    font-size:18px;
}

.header{
    display:flex;
    flex-direction: row;
    justify-content: space-between;
    background-color: #ffd180;
    height: 5rem;
}

.headerLogo{
    width:auto;
    height:100%;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-items: center;
}

.headerLogo-main{
    color:white;
    font-size: 1.5em;
    font-weight: bold;
}

.headerNav{
    height: 100%;
    width:20rem;
}
.headerNav-area{
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-around;
    height:100%;
    width:100%;
}

.main{
    width:100%;
    height:auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.mainArea{
    width: auto;
    height: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
}

.ttlFirst{
    font-size: 2rem;
    font-weight: bold;
}
.ttlSecond{
    font-size: 1.6rem;
    font-size: bold;
    border-left: 10px solid #ffab40;
    margin: 2rem 0 0.5rem 0;
    background-color: #eceff1;
    padding: 0.2rem 0 0.2rem 0.3rem;
}
.ttlThird{
    font-size: 1.2rem;
    font-weight: bold ;
}

.articleContents{
    line-height:1.8em;
}

.colored{
    animation-name: colorAnimation;
    animation-direction: alternate;
    animation-duration: 6s;
    animation-fill-mode: forwards;
    animation-iteration-count: infinite;
    
}
.btn{
    padding:1em 2em;
    border-radius: 3px;
    color:white;
    font-weight: bold;
    cursor: pointer;
}
.btn-red{
    background-color: #bb002f;
}
.btn-red:hover{
    background-color: #0031ca;
}

@keyframes colorAnimation {
    0% {
        color:#c79400;
        background-color:#b388ff;
    }
    10% {
        color:#c30000;
        background-color:#82b1ff;
    }
    20% {
        color:#bb002f;
        background-color:#84ffff;
    }
    30% {
        color:#0100ca;
        background-color:#b9f6ca;
    }
    40% {
        color:#004ecb;
        background-color:#f4ff81;
    }
    50% {
        color:#00b2cc;
        background-color:#ffe57f;
    }
    60% {
        color:#00b248;
        background-color:#ff9e80;
    }
    70% {
        color:#32cb00;
        background-color:#ff8a80;
    }
    80% {
        color:#90cc00;
        background-color:#ff80ab;
    }
    90% {
        color:#c7b800;
        background-color:#ea80fc;
    }
    100% {
        color:#c79400;
        background-color:#b388ff;
    }
}