header {
    width: 100%;
    margin: 0 auto;
    background-color: var(--header-background);
}

.headerchange {
    position: fixed;
    background-color: var(--header-background);
    width: 100%;
    overflow: hidden;
    top: 0;
    transform: translateY(-100%);
    transition: .8s;
    opacity: .98;
    z-index: 99999;
}

.headerchange nav {
    padding: var(--header-flex-padding);
}

nav {
    width: var(--all-width);
    padding: var(--header-padding);
    margin: 0 auto;
    display: flex;
    position: relative;
}

.logo {
    position: relative;
    width: var(--logo-width);
}

.logo::before {
    content: '';
    display: block;
    width: 100%;
    padding-top: 25%;
}

.menu {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: end;
}

.menu li {
    margin: 0 15px;
}

.menu li a {
    color: #fff;
}

.menu .open-search {
    position: relative;
    width: var(--button);
    margin-right: 0;
    cursor: pointer;
    overflow: hidden;
}

.menu .open-search img {
    transition: .3s;
}

.open-search::before {
    content: '';
    display: block;
    width: 100%;
    padding-top: 100%;
}

.of-sear-btn {
    display: none;
}

.searchBar {
    height: 0;
    transition: .5s;
    overflow: hidden;
    background-color: var(--search-background);
}

.searchchange {
    height: auto;
    padding: var(--search-bar-padding);
}

.search-box {
    width: var(--all-width);
    margin: 0 auto;
    display: flex;
    position: relative;
}

#search {
    flex: 1;
    background-color: transparent;
    color: #f8f8f8;
    font-size: 20px;
    padding-right: var(--button);
}

#go {
    width: var(--button);
    height: var(--button);
    position: relative;
    cursor: pointer;
}

#go::before {
    content: '';
    position: relative;
    display: block;
    padding-top: 100%;
}

#clear {
    width: var(--button);
    height: var(--button);
    position: absolute;
    top: 0;
    right: var(--button);
    cursor: pointer;
    display: none;
}

#clear::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
    width: 15px;
    height: 2px;
    background-color: #666;
}

#clear::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
    width: 2px;
    height: 15px;
    background-color: #666;
}

.border {
    position: absolute;
    top: 100%;
    min-width: 4px;
    max-width: calc(var(--all-width) - (var(--button) + var(--button)));
    border-top: 3px solid rgb(255, 0, 0);
    color: transparent;
    font-size: 20px;
}

.loop {
    background-color: var(--yelow);
}

.loop-box {
    width: var(--all-width);
    height: var(--loop-height);
    margin: 0 auto;
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.loop-text {
    position: absolute;
    height: 100%;
    align-items: center;
    animation: loop 20s linear infinite;
    transform: translateX(100%);
    top: 0;
    color: rgb(0, 0, 0);
    display: flex;
    font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
}

.loop-text span {
    font-weight: 700;
    font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
}

.loop-text:hover {
    text-decoration: underline;
}

@keyframes loop {
    0% {
        left: 100%;
        transform: translateX(0%);
    }

    100% {
        left: 0;
        transform: translateX(-100%);
    }
}

.menu-btn,
.search-btn {
    width: var(--button);
    height: var(--button);
    position: relative;
    display: none;
    cursor: pointer;
}

@media (max-width:799px) {
    nav {
        padding: var(--header-flex-padding);
        justify-content: space-between;
    }

    .menu {
        position: absolute;
        width: 100%;
        transform: translateY(-100%);
        height: 100vh;
        top: 0;
        background-color: #00000081;
        z-index: 9999;
        flex-direction: column;
        padding: 5% 5%;
        transition: .5s;
        justify-content: start;
    }

    .menu-state {
        transform: translateY(0);
        top: 100%;
    }

    .menu li:last-child {
        display: none;
    }

    .menu li {
        width: 100%;
        margin: 10px 0;
        border-bottom: 1px dashed #fff;
        padding-bottom: 10px;
    }

    .headerchange {
        visibility: hidden;
    }

    .menu-btn,
    .search-btn {
        display: block;
    }
}