.sdgs_block {
    display: flex;
}

.element {
    position: relative;
    margin: 50px 0;
}

.sdgs {
    position: relative;
}

.sdgs h3 {
    font-size: 30px;
}


.sdgs ul {
    list-style: none;
}

.sdgs li {
    font-size: 20px;
}

.sdgs_logo_main {
    display: flex;
}

.sdgs_logo_main img {
    width: 100%;
    max-width: 900px;
    margin: auto;
}


/*項目全体*/
.middle_contents {
    position: relative;
}

/*一つの項目*/
.sdgs_element {
    position: relative;
    padding: 25px;
    border-radius: 20px;
    margin: 20px 0;
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.08);
}

.sdgs_element h4 {
    font-size: 2rem;
}

.sdgs_element ul {
    list-style: none;
}

.sdgs_element li {
    font-size: 1rem;
    margin: 20px 0;
}

/*sdgsロゴ*/
.figure {
    display: flex;
}

.sdgs_logo {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 20px 3px;
    overflow: hidden;
}

.sdgs_logo img {
    width: 100%;
    vertical-align: middle;
    transition: all .3s;
}

/*上向き矢印*/
.arrow {
    position: absolute;
    top: 2px;
    display: inline-block;
    vertical-align: middle;
    margin: 25px;
    color: #fff;
    line-height: 0.3;
    width: 0.7em;
    height: 0.7em;
    border: 0.2em solid currentColor;
    border-left: 0;
    border-bottom: 0;
    box-sizing: border-box;
    transform: translateY(-25%) rotate(135deg);
    transition: all .3s;
}

.sdgs_detail {
    position: relative;
    padding: 10px;
    border-radius: 10px;
    cursor: pointer;
    background-color: #007bff;
    color: #fff;
    border: none;
    display: none;
    /*一時見えなくしている*/
}

.sdgs_detailimg {
    position: relative;
    width: 100%;
}