header {
    background: url(../img/business/header.jpg) no-repeat center / cover;
}

.com-block {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    overflow: hidden;
}
.com-ttl {
    display: flex;
    align-items: center;
    padding: 20px 30px;
}
.com-ttl .ttl-inner {
    display: flex;
    align-items: center;
}
.com-ttl .ttl-num {
    color: #4ca535;
    font-size: 24px;
    margin-right: 20px;
}
.com-ttl h2 {
    font-size: 28px;
    margin-right: 20px;
}
.icon-link {
    margin: auto 0 auto auto;
    min-width: 186px;
}
.com-item {
    width: 48%;
    position: relative;
}
.com-item:first-of-type, .com-item:nth-of-type(3) {
    border-right: 1px solid #c8c8c8;
}
.com-item:nth-of-type(2), .com-item:nth-of-type(4) {
    border-left: 1px solid #c8c8c8;
}
.com-item:first-of-type, .com-item:nth-of-type(2) {
    margin-bottom: 60px;
}
.com-item:first-of-type::after {
    content: "";
    display: flex;
    position: absolute;
    width: 100vw;
    height: 1px;
    background-color: #c8c8c8;
    bottom: 0;
    left: 0;
    z-index: 3;
}
.com-item:nth-of-type(3)::before {
    content: "";
    display: flex;
    position: absolute;
    width: 100vw;
    height: 1px;
    background-color: #c8c8c8;
    top: 0;
    left: 0;
    z-index: 3;
}
.com-item .text {
    padding: 30px;
}
@media screen and (max-width: 1460px) {
    .com-ttl .ttl-num {
        font-size: 20px;
    }
    .com-ttl h2 {
        font-size: 24px;
    }
}
@media screen and (max-width: 1200px) {
    .icon-link {
        min-width: 60px;
    }
    .com-ttl .ttl-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}
@media screen and (max-width: 700px) {
    .com-block {
        flex-direction: column;
    }
    .com-item {
        width: 100%;
        margin-bottom: 40px;
        border-top: 1px solid #c8c8c8;
    }
    .com-item:first-of-type {
        border-top: none;
    }
    .com-ttl {
        padding: 10px 20px;
    }
    .com-item .text {
        padding: 20px;
        border-bottom: 1px solid #c8c8c8;
    }
    .com-item:first-of-type, .com-item:nth-of-type(3) {
        border-right: none;
    }
    .com-item:nth-of-type(2), .com-item:nth-of-type(4) {
        border-left: none;
    }
    .com-item:first-of-type, .com-item:nth-of-type(2) {
        margin-bottom: 40px;
    }
    .com-item:last-of-type {
        margin-bottom: 0;
    }
    .com-item:first-of-type::after {
        display: none;
    }
    .com-item:nth-of-type(3)::before {
        display: none;
    }
    .com-ttl {
        padding: 20px 10px;
    }
}