.spec-table {
    margin-bottom: 25px;
    border-collapse: collapse;
    text-align: center;
}

.spec-table td, .spec-table th {
    border: solid 1px #cccccc;
    padding: 10px;
}

.spec-table th {
    background: #eeeeee;
}

.system-list {
    list-style: disc;
    padding-left: 20px;
}

.system-list li {
    margin: 10px 0;
}

.option-box > p {
    float: left;
    width: 15%;
}

.option-box > .img {
    float: left;
    margin: 10px 5px;
    width: 17%;
}

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

    .option-box > .img {
        width: 60%;
    }
}