*{
    margin: 0;
    padding: 0;
    font-family: 'Poppins', sans-serif;
    box-sizing; border-box;
}
html{
    scroll-behavior: smooth;
}
body{
    background: #223F4C;
    color: #fff;
}
#header{
    width: 100%;
    height: 100vh;
    background-image: url(images/background.png);
    background-size: cover;
    background-position: center;
}
.container{
    padding: 10px 10%;
}

nav{
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}

.logo{
    width: 140px;
}

nav ul li{
    display: inline-block;
    list-style: none;
    margin: 10px 20px;
}

nav ul li a{
    color: #fff;
    text-decoration: none;
    font-size: 25px;
    position: relative;
}
nav ul li a::after{
    content: '';
    width: 0;
    height: 3px;
    background: #fff;
    position: absolute;
    left: 0;
    bottom: -7px;
    transition: 0.5s;
}
nav ul li a:hover::after{
    width: 100%;
}
.header-text{
    margin-top: 20%;
    font-size: 30px;
}
.header-text h1{
    font-size: 60px;
    margin-top: 20px;
}
/*----------about----------*/
#about{
    padding: 80px 0;
    color: #fff;
}
.row{
    display: flex;
    justify-content: space-between;
    flex wrap: wrap;    
}

.about-col-1{
    flex-basis: 35%;
}
.about-col-1 img{
    width: 100%;
    border-radius: 25px;
}
.about-col-2{
    flex-basis: 60%;
}

.sub-title{
    font-size: 60px;
    font-weight: 600;
    color: #fff;
}

.tab-titles{
    display: flex;
    margin: 50px 0 40px;
}
.tab-links{
    margin-right: 50px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    position: relative;
}
.tab-links::after{
    content: '';
    width: 0;
    height: 3px;
    background: #F9F871;
    position: absolute;
    left: 0;
    bottom: -8px;
    transition: 0.5s;
}

.tab-links.active-link::after{
    width: 50%;
}

.tab-contents ul li{
    list-style: none;
    margin: 10px 0;
}
.tab-contents ul li span{
    color: #fff;
    font-size: 14px;
}
.tab-contents{
    display: none;
}
.tab-contents.active-tab{
    display: block;
}

/*----------services----------*/
#services{
    padding: 30px 0;
}
.services-list{
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    grid-gap: 40px;
    margin-top: 50px;
}
.services-list div{
    background: #0D6670;
    padding: 40px;
    font-size: 20px;
    font-weight: 300;
    border-right: 10px;
    transition: background 0.5s, transform 0.5s;
}
.services-list div i{
    font-size: 50px;
    margin-bottom: 30px;
}
.services-list div h2{
    font-size: 30px;
    font weight: 500;
    margin-bottom: 15px;
}
.services-list div a{
    text-decoration: none;
    color: #fff;
    font-size: 18px;
    margin-top: 20px;
    display: inline-block;
}
.services-list div:hover{
    background: #4FB685;
    transform: translateY(-10px);
}
/*---------Portofolio----------*/
#portofolio{
    padding: 50px 0;
}
.work-list{
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    grid-gap: 40px;
    margin-top: 50px;
}
.work{
    border-radius: 10px;
    position: relative;
    overflow: hidden;
}
.work img{
    width: 100%;
    border-radius: 10px;
    display: block;
    transition: transform 0.5s;
}
.layer{
    width: 100%;
    height: 0;
    background: linear-gradient(rgba(0,0,0,0.6), #0D6670);
    border-radius: 10px;
    position: absolute;
    left: 0;
    bottom: 0;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 0 0px;
    text-align: center;
    font-size: 20px;
    transition: height 0.5s;
}
.layer h3{
    font-weight: 500px;
    margin-bottom: 20px;
}
.layer a{
    margin-top: 20px;
    color: #223F4C;
    text-decoration: none;
    font-size: 18px;
    line-height: 60px;
    background: #fff;
    width: 60px;
    height: 60px;
    border-radius: 50px;
    text-align: center;
}
.work:hover img{
    transform: scale(1.1);
}
.work:hover .layer{
    height: 100%;
}
.btn{
    display: block;
    margin: 50px auto;
    width: fit-content;
    border: 1px solid #4FB685;
    padding: 14px 50px;
    border-radius: 10px;
    text-decoration: none;
    color: #fff;
    transition: 0.5s;
}
.btn:hover{
    background: #4FB685;
}

/*----------Contacts----------*/
.contact-left{
    flex-basis: 35%
}
.contact-right{
    flex-basis: 60%;
}
.contact-left p{
    margin-top: 30px;   
}
.contact-left p i{
    color: #9DDB7A;
    margin-right: 15px;
    font-size: 30px;
}
.copyright{
    width: 100%;
    text-align: center;
    padding: 25px 0;
    background: #4FB685;
    font-weight: 300;
    font-size: 20px;
    margin-top: 20px;
}
/*----------css for small screens----------*/
@media only screen and (max width: 600px){
    #header{
        background-image: url(images/phone-background.png);
    }
}