/* ==================================

    interior.css

================================== */

.interior-area {
    width: 80%;
    max-width: 1500px;
    margin: 0 auto;
    padding: 32px 0;
}

@media screen and (max-width: 768px) {
    .interior-area {
        width: 100%;
        padding: 32px;
    }
}

.flex-space-between-wrap {
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flex;
    display: -o-flex;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.flex-space-between-wrap::after{
    content:"";
    display: block;
    width:33%;
}

.i-box {
    width: 30%;
    margin-bottom: 64px;    
}

@media screen and (max-width: 768px) {
    .i-box {
        width: calc(50% - 16px);
        margin-left: 8px;
    }
}

@media screen and (max-width: 640px) {
    .i-box {
        width: 100%;
    }
}

.i-inner-box {
    position: relative;
    width: 100%;
    padding-bottom: 66.7%;
    padding-bottom: 100%;
    background-color: rgba(142, 147, 109, 0.2);
}

.i-inner-box img {
    position: absolute;
    top: -8px;
    left: -8px;  
}

.i-inner-box::before{
    content: '';
    position: absolute;
    top: -8px;
    left: -8px;
    width: 100%;
    height: 100%;
    z-index: 2;
    transition: background-color 0.5s;
}

.title-box {
    margin-top: 24px;
}

.title-box span {
    letter-spacing: 0.08em;
}

.title-box span:nth-of-type(2) {
    display: block;
    font-size: 1.8rem;
    padding: 4px 0;
}