*{
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
/* navbar starts */
li a{
    text-decoration: none;
    color: black;
}

ul li{
    list-style-type: none;
}
.logo img{
    height: 58px;
}
nav{
    display: flex;
    align-items: center;
    padding: 20px 0;
    justify-content: center;
    gap: 35vw;
}
nav ul{
    display: flex;
    gap: 30px;
}
.link-lan{
    display: flex;
    align-items: center;
    gap: 30px;
}
.lang img{
    height: 25px;
}
.link-lan ul li img{
    height: 15px;
    padding: 5px;
}
.link-lan ul li img:hover{
    cursor: pointer;
}
.link-lan ul li {
    display: flex;
    align-items: center;
}
/* navbar ends */
/* main starts */
main{
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 50px 0;
}

main .head{
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 50px;
    font-size: 3rem;
}
main a>img{
    width: 130px;
}
main #download{
    text-align: center;
    font-size: 1.5rem;
    margin: 40px 0;
    max-width: 65vw;
}
main .button{
    text-align: center;
}
main .button >button{
    padding: 15px 20px;
    font-size: 1rem;
    font-weight: 700;
    background-color: #00b6d1;
    border: none;
    color: white;
    border-radius: 5px;
    text-transform: uppercase;
}
main .button a{
    text-decoration: none;
    color: white;
}
/* main ends here */
/* section starts here */
.dl-ue{
    margin: 75px 0;
}
#dl-ue-logo{
    background-color: yellow;
    padding: 15px;
    font-weight: 800;
    font-size: 1.5rem;
    font-style: italic;
}
#dl-ue-du{
    font-size: 1.3rem;
    margin: 0 5px 0 15px;
}
.dl-ue p span:nth-child(3){
    font-size: 12px;
}
.box{
    margin-bottom: 30px;
    background-color:  #f9f9f9;
    width: 300px;
    height: 125px;
    text-align: center;
    padding: 15px;
    border-radius: 5px;
}
.box p{
    font-size: 1.25rem;
    font-weight: 700;
    padding-bottom: 10px;
}
.box p:nth-child(2){
    font-size: 14px;
    font-weight: 400;
}
.box button{
    width: 130px;
    height: 40px;
    margin: 20px 5px 0 5px;
    border-radius: 5px;
    border: none;
    background-color: #00b6d1;
    color: white;
    padding: 10px;
    font-weight: 700;
}
.box button:nth-child(2){
    background-color: #5cb85c;;
}
.section{
    margin: auto;
    max-width: 70vw;
}
section{
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    max-width: 50vw;
    gap: 15px;
}
.dark{
    height: 100vh;
    background-color: #222222;
    color: white;
}
.div1{
    display: grid;
    grid-template-columns: 1fr 1fr;
    justify-items: center;
    align-items: center;
    gap: 50px;
    margin: 50px 250px;
    text-align: center;
}
.div2{
    margin: 25px auto;
    max-width: 70vw;
}
.div1-1{
    font-size: 1.5em;
    font-weight: 500;
}
.div1 p:nth-child(2){
    font-size: 1rem;
    font-weight: 400;
}
.div1-2{
    color: black;
    padding: 25px;
    margin: 80px;
    width: 300px;
    height: 215px;
    background-color: white;
    border-radius: 10px;
    text-align: center;
}
.div1-2 form p{
    font-size: 1.5rem;
    color: #00b6d1;
}
.div1-2 form p:nth-child(2){
    font-size: 14px;
    color: black;
    margin-top: 25px;
    margin-bottom: 5px;
}
form input{
    width: 90%;
    height: 50px;
    border: 1px solid lightgray;
    border-radius: 5px;
}
#btn{
    width: 90%;
    margin: 10px;
    height: 50px;
    border-radius: 5px;
    border: none;
    background-color: #00b6d1;
    color: white;
    font-size: 1rem;
    font-weight: 600;
}
.div2-1{
    line-height: 40px;
}
.div2 h2{
    font-weight: 400;
}
footer{
    height: 60vh;
}
.foot{
    margin: 100px 250px;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
}
.foot p a{
    text-decoration: none;
    color: black;
    font-size: small;
}
.foot4 p{
    font-size: small;
}
.foot h4{
    margin-bottom: 20px;
}
.foot4 input{
    width: 90%;
    height: 25px;
    border: 1px solid gray;
    border-radius: 5px;
    margin: 10px 0;
    padding: 5px;
}
.foot4 button{
    height: 35px;
    width: 95%;
    padding: 5px;
    background-color: #00b6d1;
    border: none;
    color: whitesmoke;
    font-weight: 700;
}
@media  screen and (max-width: 420px) {
    section{
        display: grid;
        grid-template-columns: 1fr;
        max-width: 50vw;
        gap: 15px;
        margin: auto;
    }    
    .div1{
        display: flex;
        flex-direction: column;
        margin: 0 auto;
        max-width: 50vw;
        padding: 10px;
    }
    .div1-2{
        margin: 0;
    }
    .div2{
        margin: 0;
    }
    .dark{
        width: 100vw;
        height: auto;
        padding: 10px;
    }
    .foot{
        grid-template-columns: 1fr;
        gap: 25px;
        margin: 30px ;
        padding: 25px;
    }
    .box p:nth-child(3){
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    .box{
        height: 200px;
        width: 200px;
    }
    main .head{
        font-size: 1.5rem;
        flex-direction: column;
    }
    .dl-ue p span:nth-child(3){
        margin-left: 75px;
    }
    nav{
        flex-direction: column;
        align-items: center;
    }
    nav ul{
        flex-direction: column;
    }
}