* {
    margin: 0;
    padding: 0;
    font-size: 0;
}

body {
    background: linear-gradient(90deg, #FFFFFF 31px, transparent 0%) center,
                linear-gradient(#FFFFFF 31px, transparent 0%) center,
                #B3B3B3;
    background-size: 35px 35px;
}

header {
    position: relative;
    padding-top: 10px;
    padding-bottom: 5px;
    background-color: #FFFFFF;
}

#home_button {
    position: absolute;
    top: 10px;
    left: 10px;
    z-index: 100;
}

#home_button img {
    width: 200px;
}

#header_image {
    position: relative;
    display: block;
    width: 100%;
    max-width: 1024px;
    margin: auto;
}

#tabs {
    position: relative;
    width: 100%;
}

#tabs_line {
    width: 100%;
}

.tab {
    position: absolute;
    top: 5%;
    cursor: pointer;
}

.tab img {
    width: 100%;
}

#tab_1 {
    left: 9.47%;
    width: 7.66%;
}

#tab_2 {
    left: 29.66%;
    width: 11.06%;
}

#tab_3 {
    left: 52.48%;
    width: 7.58%;
}

#tab_4 {
    left: 72.79%;
    width: 11.29%;
}

content {
    position: relative;
    display: block;
    width: 1000px;
    margin: auto;
}

content img {
    width: 100%;
}