.part {
    position: relative;
    font-size: .75rem;
}
.part .part-wrap {
    padding: 15px;
}
.part .part-image {
    max-width: 100%;
    width: 100%;
}
.part-text-center {
    text-align: center;
}
.part .part-title {
    font-size: 1.9em;
    font-weight: bold;
    line-height: 1.25;
}
.part .part-text {
    font-size: 1.25em;
    margin-top: .5em;
}
.part .part-text2 {
    font-size: 1em;
    padding-top: 1.5em;
}

.part-first .part-title {
    font-size: 5em;
    color: #eb8f0a;
}
.part-first .part-text {
    font-size: 2.5em;
    font-weight: bold;
}

.part-ram {
    color: #fff;
}
.part-ram .part-wrap {
    position: absolute;
    top: 1%;
    left: 0;
    right: 0;
}
.part-ram .part-title {
    font-size: 1.25em;
}

.part-protect2,
.part-protect3,
.part-protect4 {
    color: #fff;
}
.part-protect .part-wrap,
.part-protect2 .part-wrap,
.part-protect3 .part-wrap,
.part-protect4 .part-wrap {
    position: absolute;
    top: 0%;
    left: 0%;
    right: 0%;
}
.part-protect4 .part-note {
    font-size: .75em;
    text-align: right;
    position: absolute;
    bottom: 2%;
    right: 5%;
}

.part-security {
    background-color: #e7e8ed;
}
.part-security .part-wrap {
    width: 100%;
    padding: 60px 15px;
    margin: 0 auto;
}
.part-security .part-text2 {
    width: 100%;
    padding-top: 4em;
    margin: 0 auto;
    display: flex;
    align-items: stretch;
    justify-content: space-around;
}
.part-security .part-i img {
    width: 55px;
}
.part-security .part-t {
    padding-top: 5px;
}

@media (min-width: 768px) {
    .part {
        font-size: 1rem;
    }
    .part .part-wrap {
        padding: 0;
    }
    .part-first {
        color: #fff;
    }
    .part-first .part-wrap {
        position: absolute;
        top: 14%;
        left: 10%;
        right: 45%;
    }

    .part-ram .part-wrap {
        top: 5%;
        left: 10%;
        right: 10%;
    }
    .part-ram .part-title {
        font-size: 2em;
    }

    .part-protect .part-wrap,
    .part-protect2 .part-wrap,
    .part-protect3 .part-wrap,
    .part-protect4 .part-wrap {
        top: 12%;
        left: 18%;
        right: 40%;
    }

    .part-body,
    .part-quality,
    .part-display,
    .part-cpu,
    .part-camera,
    .part-navigation {
        color: #fff;
    }
    .part-body .part-wrap,
    .part-quality .part-wrap,
    .part-battery .part-wrap,
    .part-display .part-wrap,
    .part-cpu .part-wrap,
    .part-camera .part-wrap,
    .part-os .part-wrap,
    .part-navigation .part-wrap {
        position: absolute;
        top: 5%;
        left: 15%;
        right: 15%;
    }
    .part-navigation .part-wrap {
        left: 30%;
        right: 30%;
    }
    .part-os .part-text,
    .part-security .part-text {
        width: 80%;
        margin-left: auto;
        margin-right: auto;
    }

    .part-security .part-wrap {
        width: 75%;
        padding: 60px 0;
    }
    .part-security .part-text2 {
        width: 80%;
    }
}

@media (max-width: 480px) {
    .part .part-title {
        font-size: 1.25rem;
    }
    .part .part-text {
        font-size: .85rem;
    }
    .part-first .part-title {
        font-size: 3em;
    }
    .part-first .part-text {
        font-size: 1.5em;
    }
    .part-security .part-i img {
        width: 45px;
    }
}