body {
    margin: 0;
    text-align: center;
    display: flex;
    justify-content: center;
}
ul.index-ul {
    list-style-type: none;
    display: flex;
    align-items: center;
}
li.index-li {
    margin: 0 20px;
}
li.index-li a {
    color: white;
    font-weight: 600;
}
.main-header {
    color: white;
}
img.index-logo-img {
    width: 40px;
    height: 40px;
    border-radius: 10px;
}
nav.index-nav {
    width: 100%;
    background-color: rgb(26, 67, 203);
    display: flex;
}
div.index-main {
    width: 100%;
    height: 100svh;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.left{
    width: 500px;
    padding-right: 70px;
    position: relative;
}
.left::before {
    content: "";
    position: absolute;
    left: -24px;
    top: 7px;
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, rgb(8, 223, 8), rgb(8, 223, 8), rgb(0, 112, 0));
}
.left::after {
    content: "";
    position: absolute;
    left: -28.5px;
    top: 5px;
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: rgb(8, 223, 8)
}
.mini-text {
    font-size: 17.5px;
    color: white;
    display: block;
    text-align: left;
    line-height: 1.5;
    position: relative;
}
.mini-text::before {
    content: "";
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0) 50%, rgba(0, 0, 0, 0.336) 100%);
    position: absolute;
    left: 0;
    top: 0;
}
.header {
    font-size: 40px;
    text-align: left;
    color: rgb(8, 223, 8);
    margin: 0 0 15px 0;
}
section {
    background-color: black;
    height: 100%;
    padding: 0 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.right {
    display: flex;
    justify-content: flex-start;
}
.appstoreimage-frame {
    perspective: 100px;
}
.appstoreimage {
    border-radius: 16px;
    max-height: 450px;
    margin-right: 15px;
    box-shadow: 0 1px 4px rgb(138, 138, 138);
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
#appstore1 {
    transform: rotate3d(.5,1,0,2deg) 
    rotate(-1deg) 
    translate(-10px)
    translateZ(0);
}
#appstore3 {
    transform: rotate3d(.5,-1,0,2deg) 
    rotate(1deg) 
    translate(10px)
    translateZ(0);
}
footer {
    background-color: rgb(26, 67, 203);
}
* {
    font-family: Arial, Helvetica, sans-serif;
}

@media screen and (max-width: 1350px) {
    .header {
        font-size: 35px;
    }
    .mini-text {
        font-size: 16px;
    }
    .appstoreimage {
        margin-right: 7px;
        border-radius: 12px;
    }
}

@media screen and (max-width: 1150px) {
    .mini-text {
        font-size: 15px;
    }
}

@media screen and (max-width: 1050px) {
    .header {
        font-size: 32px;
    }
    .mini-text {
        font-size: 14px;
    }
}

@media screen and (max-width: 900px) {
    div.index-main {
        height: auto;
    }
    section {
        flex-direction: column;
        align-items: flex-start;
        padding: 50px;
    }
    .right {
        width: 100%;
        justify-content: center;
    }
    .left {
        padding: 0;
        margin: 0 0 70px 10px;
        justify-content: flex-start;
    }
}

@media screen and (max-width: 600px) {
    .left {
        width: calc(100% - 20px);
    }
    .header {
        font-size: 26px;
    }
    #appstore1 {
        transform: rotate3d(.5,1,0,3.5deg) 
        rotate(-1deg) 
        translate(-10px)
        translateZ(0);
    }
    #appstore3 {
        transform: rotate3d(.5,-1,0,3.5deg) 
        rotate(1deg) 
        translate(10px)
        translateZ(0);
    }
}