html {
    scroll-behavior: smooth;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font: normal 16px / 24px "Roboto", Helvetica, Arial, Verdana, sans-serif;
}

body {
    transition: background-color .5s;
}

.container {
    border: none;
    box-shadow: 0px 0px 10px 0px gray;
    margin: auto;
    max-width: 1100px;
}

.inner {
    display: flex;
}

.center-box {
    border: none;
    margin: auto;
    width: 60%;
    min-height: 800px;
    margin-top: 10px;
    padding: 10px;
    overflow: hidden;
    position: relative;
}

.backgroundImg {
    opacity: 0.1;
    position: absolute;
    left: 0;
    top: 130px;
    width: 100%;
    height: auto;
}

.for-title {
    border: none;
    border-bottom: dotted 1px lightgrey;
    min-width: 100%;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    margin-top: -25px;
}

.b-title {
    font-weight: bold;
    font-size: 20px;
    color: #333333;
    margin: 10px;
}

.div_line {
    width: 90%;
    margin: auto;
    position: relative;
}

[class*=archives_] {
    border: none;
    width: 97%;
    position: relative;
    text-align: center;
    justify-content: center;
    align-items: center;
    transition: 0.5s;
}

.year,
.label {
    font-weight: bold;
    color: #333333;
    margin-top: 20px;
}

.accordion .content {
    position: relative;
    background: #fff;
    height: 0;
    overflow: auto;
    transition: 0.5s;
    overflow-y: auto;
    z-index: 1;
}

.content {
    border: none;
    flex-direction: column;
}

[class*=issue] {
    border: none;
    border-radius: 3px;
    width: 85%;
    margin: 15px auto;
    color: #fff;
    background: #5bc0de;
    transition: 0.5s;
    padding: 8px;
    font-weight: normal;
    font-size: 14px;
    text-align: center;
    cursor: pointer;
}

.class-a {
    text-decoration: none;
}

.accordion {
    background-color: #eee;
    color: #444;
    cursor: pointer;
    padding: 10px;
    font-size: 14px;
    width: 100%;
    font-weight: bold;
    margin-top: 10px;
    text-align: left;
    border: none;
    outline: none;
    transition: 0.4s;
}

.accordion::after {
    font-size: 20px;
    content: '\002B';
    float: right;
}

.accordion.active::after {
    font-size: 20px;
    float: right;
    content: '\2212';
}

.active,
.accordion:hover {
    background-color: #ccc;
    max-height: 100% !important;
}

.panel {
    background-color: white;
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.2s ease-out;
}

.br {
    content: "";
    margin: 550px;
    display: block;
    font-size: 24%;
}

.license-box {
    display: flex;
    align-items: center;
    justify-content: center;
}

@media only screen and (max-width: 970px) {
    .center-box {
        width: 50%;
    }
}

@media only screen and (max-width: 770px) {
    .inner {
        flex-direction: column;
    }
    [class*=archives_],
    .accordion {
        width: 100%;
        margin: 0;
    }
    .div_line {
        flex-direction: column;
    }
    .center-box {
        width: 100%;
    }
    [class*=issue] {
        width: 60%;
    }
    .br {
        display: none;
    }
    .license-box {
        width: 100%;
        margin-left: 20px;
        margin-top: 20px;
    }
}