*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    font-size: 15px;
    font-family: sans-serif,Arial, Helvetica, sans-serif;
}
#content img:hover {
    border: 3px solid greenyellow;
}

.img-logo img:hover {
    border: 3px solid greenyellow;
}
#header {
    height: 100px;
    background-color: black;
}
/* logo */
#header .img-logo {
    width: 20%;
    height: 100px;
    float: left;
    display: flex;
    cursor: pointer;
}
#header img,a {
    width: 100%;
    margin: auto;
}

#khauhieu {
    color: greenyellow;
    margin-top: 40px;
    margin-left: 50px;
}

/* Search */
#header .form-search {
    display: flex;
    height: 100px;
    width: 80%;
    float: right;
    /* border: 1px solid#fff; */
}
#header form {
    margin: auto 2% auto auto;
}
#search {
    width: 300px;
}
#header form input[type=button] {
    background-color: black;
    color: greenyellow;
    border: 1px solid greenyellow;
}
#header input[type="button"]:hover {
    background-color: black;
    color: cyan !important;
    border: 1px solid cyan;
}
/* d.nhap - d.ky */
#main-nav .log-in-out {
    display: flex;
    width: 20%;
    height: 45px;
    float: right;
}
#main-nav form {
    margin: auto;
}
#main-nav input[type="button"] {
    border:1px solid white;
}
#main-nav input[type="button"]:hover {
    background-color: black;
    color: cyan !important;
    border: 1px solid cyan;
}
/* modal */
/* #modalDangnhap .modal-dialog {
    border-radius: 10px 0px 0px 10px;
} */
#modalDangnhap  .form-control {
    width: 80%;
}
#modalDangnhap .form-input input {
    margin-left: 10%;
}
#modalDangnhap .nav-tabs .nav-link.active{
    color: black;
    border: 5px solid greenyellow;
}
#modalDangnhap a {
    color: cyan;
}
#modalDangnhap .btn-dark{
    color: cyan;
}
#modalDangnhap .nav-item{
    width: 50%;
}
#modalDangnhap span {
    margin-left: 10%;
}

/* Navigation */
#main-nav {
    background-color: black;
    box-shadow: 0px 0px 1px  black;
    position: sticky;
    height: 45px;
    z-index: 1;
    top :0;
}
#main-nav .nav {
    width: 80%;
    float: left;
}
#main-nav li a{
    font-size: 20px;
}
#main-nav>ul>li:hover> a{
    
    color: cyan   !important; 
}

#main-nav li:hover .dropdown-menu {
    display: block;
    top: 43px;
    padding:  0px 1px 1px 1px ;
    border: 1px double gray;
}

#main-nav .dropdown-item:hover {
    color: cyan ;
    background-color: black;
    
}

/* slider */
#slider {
    width: 100%;
    height: 450px;
    background-color: black;
    z-index: 0;
   
}
#slider img{
    height: 450px;
    width: 100%;
}


#content .sp {
    width: 100%;
    height: 400px;
   
}

#content .sp-left {
    float: left;
    width: 50%;
}
#content .sp-right {
    float: right;
    width: 50%;
}
#content  .phukien {
    clear: both;
    width: 50%;
    margin: 10% 25%;
}
#content .sub-sanpham {
    
    
    text-align: center;
    
    height: 300px;
    padding: 0 50px;
    margin-top: 50px;
    border-right: 1px solid rgb(194, 194, 194);
    
}
#content .sub-sanpham img {
    width: 50% ;
    margin: 3% 13% ;
    height: 80%;

}
#content .sub-sanpham a {
    text-decoration: none;
    color: black;
}
#content .sub-sanpham h2:hover {
    color: rgb(0, 255, 255);
   
}
/* #content .sub-sanpham p{
    opacity: 0.8;
   
} */
#content .phukien .sub-sanpham {
    border-right: none ;
    border-top: 1px solid rgb(194, 194, 194);
}
#content .sub-phukien img {
    width: 100%;
}
/* Footer */
#footer {
    background-color: black;
    color: gray;
    padding: 10px 0px;
    clear: both;
    
}
#footer .f-gioithieu p {
    margin: 10px 1%;
    
    text-align: justify;
    
}
#footer .f-diachi {
    border-top: 1px solid gray;
    margin: 20px 1%;
    padding-top: 1%;
}
#footer .f-diachi span {
    font-weight: bold;
    font-size: 17px;
    color: red;
}

    @keyframes move2 {
        from {background-color: none; top: 0px;}
        to {background-color: gray; top:100px}
    }
.phukien,.sp {
    animation-name: move2;
    animation-duration: 1s;
    animation-timing-function: linear;
    animation-direction: reverse;
    animation-iteration-count: 1;
    position: relative;
}
.phukien {
    animation-delay: 0.5s;
}
/* tablet */
.sub-menu {
    width: 10%;
    float: left;
    display: none;
}

.sub-menu img{
    width: 30px;
    height: 30px;
    margin: 8px 0 5px 10px;
    background-color: black;
    border: none;
    float: left;
}
.bg_gray {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background-color: gray;
    opacity: 0.6;
    animation: bg-gray-move linear 0.3s;
    display: none;

   
}
.sub-menu label {
    margin-bottom:  0 !important;
}
.subnav {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 200px;
    max-width: 200px;
    background-color: black;
    padding: 20px;
    z-index: 1;
    transform: translateX(-100%);
    transition: transform  linear 0.3s;
}
.subnav>ul>li:hover> a{
    
    color: cyan   !important; 
}
.chk {
    display: none;
}
.chk:checked ~ .bg_gray{
    display: block;
}
.chk:checked ~ .subnav {
    transform: translateX(0%);
    
}

@media (max-width:800px) {
    #main-nav> .nav {
        display: none ;
    }
    #main-nav .form-inline {
        margin-right: 20px;
    }
    #main-nav .log-in-out {
        width: 60%;
    }
    .sub-menu {
        display: block;
    }
}
@media (max-width:480px){
    #search {
        width: 50%;
        
    }
}
@keyframes bg-gray-move {
    from{opacity: 0;}
    to {opacity: 0.6;}
}