.header-menu-title, .header-menu-list{
    line-height: initial;
    height: 60px;
    display:         flex;
    display: -webkit-flex;
    align-items: center;
    -webkit-align-items: center;
    justify-content: center;
    -webkit-justify-content: center;
    flex-direction:column;
}

.about-day-name{
    font-size: 22px;
}

.rwd-problem-class {
    width: 100%;
    height: 46px;
    border: 1px solid #1c4c5e;
    background-color: #5f8888;
    font-size: 16px;
    letter-spacing: 1px;
    text-align: center;
    line-height: 46px;
    position: relative;
    box-sizing: border-box;
    display: block;
}

.rwd-problem-class:after {
    content: '\f078';
    font-weight: bold;
    font-family: "Font Awesome 5 Free";
    font-size: 14px;
    color: #eac369;
    display: block;
    position: absolute;
    right: 10px;
    top: 0;
    pointer-events: none;
}
.problem-class-all-box {
    width: 100%;
    display: none;
    position: absolute;
    z-index: 3;
    background-color: #1c4c5e;
    box-sizing: border-box;
    padding: 5px 0;
    border: 1px solid #436e73;
}

.problem-class:nth-child(n) {
    width: 100%;
    margin-right: 0;
    line-height: 36px;
}
.problem-class:after{
    display: none;
}
@media only screen and (max-width: 1280px){
    .about-day-name{
        font-size: 18px;
    }
}
@media only screen and (max-width: 1000px){
    .header-menu-title br{
        display: none;
    }
}