styles.css

* {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    vertical-align: baseline;
    background: transparent;
}

@font-face {
    font-family: 'Vazir';
    src: url(font/Vazir-FD.eot);
    src: url(font/Vazir-FD.eot?#iefix) format('embedded-opentype'),
         url(font/Vazir-FD.woff2) format('woff2'),
         url(font/Vazir-FD.woff) format('woff'),
         url(font/Vazir-FD.ttf) format('truetype');
    font-weight: normal;
    font-style: normal;
}

body {
    background-color: #1b2537;
    color: white;
    font-family: Vazir;
    font-size: 12pt;
    line-height: 1.5;
}

button {
    color: white;
    font-family: Vazir;
}

button:hover {
    cursor: pointer;
}

a {
    text-decoration: none;
}

header {
    width: calc(100% - 100px);
    height: 80px;
    float: left;
    border-bottom: 1px solid hsla(0,0%,100%,.25);
    display: flex;
    flex-direction: row-reverse;
    justify-content: space-between;
    align-items: center;
    padding-left: 30px;
}

.header-item {
    padding-left: 8px;
    padding-right: 8px;
}

.lenz {
    margin-left: auto;
    padding-right: 60px;
}

.lenz:hover {
    cursor: pointer;
}

.language button{
    height: 30px;
    font-size: 16px;
}

.language button:nth-of-type(2) {
    color: hsla(0,0%,100%,.25);
}

.visible-hr {
    border: 0.5px solid hsla(0,0%,100%,.25);
}

button[id=sign],
button[id=login] {
    border: 1px solid #ffc107;
    border-radius: 1000px;
    height: 40px;
    font-family: Vazir;
    font-size: 16px;
}

button[id=sign] {
    background-color: #feaa0a;
    color: black;
    width: 115px;
}

button[id=login] {
    width: 100px;
}

button[id=login]:hover {
    background-color: #feaa0a;
    color: black;
    transition: .3s ease-in-out;
}

.search-icon {
    width: 32px;
    height: 32px;
}

aside {
    width: 100px;
    height: 100%;
    float: right;
    background-color: #232e41;
    position: fixed;
}

.home-icon {
    height: 80px;
    background: url(images/lenz.svg) no-repeat center;
    background-size: 48px 48px;
    border-bottom: 1px solid hsla(0,0%,100%,.25);
}

.navbar {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;    
}

.navbar a {
    width: 100%;
    height: 100px;
    border-bottom: 1px solid #1d2637;
    text-align: center;
    -webkit-filter: opacity(50%);
    filter: opacity(50%);
    opacity: .5;
}

.navbar a img {
    padding-top: 10px;
}

.navbar a:hover {
    cursor: pointer;
}

.navbar a:hover span {
    color: white;
    transition: .4s ease-in-out;
}

.navbar a span {
    color: #9197a1; 
    font-size: 16px;    
}

#icon:focus {
    -webkit-filter: opacity(100%);
    filter: opacity(100%);
    opacity: 1;
    transition: .3s ease-in-out;
}

#icon:focus span {
    color: white;
}

#icon:focus:before {
    content: "";
    position: absolute;
    width: 50%;
    left: 25px;
    bottom: 0;
    border-top: 4px solid #feaa0a;
    border-top-left-radius: 5px;
    border-top-right-radius: 5px;  
}

main {
    width: calc(100% - 100px);
    height: 300px;
    float: left;
}

footer {
    width: calc(100% - 100px);
    float: left;
}

.footer1 {
    background-color: #232e41;
    padding: 15px 100px 15px 0;
    display: flex;
    justify-content: flex-start;
    flex-wrap: wrap;
}

.footer-item {
    padding-left: 50px;
    min-width: 200px;
}

.lenz-intro {
    max-width: 200px;
}

.download-links {
    max-width: 275px;
}

.footer1 img {
    display: inline-block;
    vertical-align: top;
    width: 48px;
    height: 48px;
}

.lenz-intro div {
    display: inline-block;
    height: 60px;
    font-size: 14px;
}

.lenz-intro span {
    color: #ccc;
}

.access a {
    color: #feaa0a;
}

.links1,
.links2 {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.links1 {
    padding-bottom: 4px;
}

.links2 {
    padding-top: 4px;
}

.download-links img {
    width: 30px;
    height: 30px;
    vertical-align: middle;
}

.download-links a {
    display: inline-block;
    width: 125px;
    color: white;
    border: 1px solid #2a3d5d;
    border-radius: 100px;
    box-shadow: 
         0 0 0 4px #232e41,
         0px 8px 20px #00152c;
    background-color: #232e41;
    font-size: 12px;
    margin: 9px 0 9px 0;
}

.footer2 {
    background-color: #00152c;
    padding-right: 120px;
    padding-left: 100px;
    padding-top: 25px;
    height: 90px;
}

.copyright {
    display: inline-flex;
    float: right;
    width: 360px;
    justify-content: space-between;

}

.copyright button {
    color: rgba(255, 255, 255, 50%);
}

.copyright div:first button:hover {
    color: white;
}

#fa, #en {
    font-size: 1rem;
    font-weight: 400;
}

#fa:hover {
    color: white;
    transition: .2s ease-in-out;
}

.social-media {
    display: inline-flex;
    float: left;
    width: 150px;
    justify-content: space-between;
}

p {
    color: rgba(255, 255, 255, 50%);
    font-size: 13px;
}