*{
    margin: 0;
    padding: 0;
    font-family: century Gothic;
}
header{
    background-image: url('gtt.ppg.jpg');
    height: 315vh;
    background-size: cover;
    background-position: center;
}
.maindiv{
    width: 75%;
    height: 400px;
    position: absolute;
    left: 14%;
    top: 90%;
    background-image: url('dr2.jfif');
    background-size: 50% 100%;
    box-shadow: 2px 3px 10px green;
    animation:slider 12s infinite linear;
}
@keyframes slider{
    18%{background-image: url('drone.jfif');}

    5%{background-image: url('dr2.jfif');}

    20%{background-image: url('dr4.jfif');}


    35%{background-image: url('Heliguy-Benefits_of_RTK-RTK_Illustration-optimized.webp');}

    75%{background-image: url('dr3.jfif');}
}
ul{
    float: right;
    list-style-type: none;
    margin-top: 20px; ;
}
ul li{
    display: inline-block;
    color: red;
}
ul li a{
    text-decoration: none;
    border: 1px solid black;
    top: 10%;
    color: green;
    font-size: 1.5rem;
    text-size-adjust: 10px;
    padding: 5px 20px;
    transition: 0.6s ease;
}
ul li a:hover{
    background-color: red;
    color: black;
}
ul li.active a{
    top: 20%;
    color: green;
    font-size: 1.5rem;
    text-align: center;
}
.logo img{
    float: center;
    top: 500px;
    width: 250px;
    height: auto;
}
.nav-input{
    top=: 5px;
}
.main{
    max-width: 1200px;
    margin: auto;
}
.button6{
    text-decoration: none;
    color: green;
    text-size-adjust: 10px;
    left: 10%;
    font-size: 2rem;
    color: white;
}
.title {
    position: absolute;
    font-size: 2.1rem;
    color: red;
    top: 27%;
    left: 49%;
    transform: translate(-50%,-50%);
}
.youtube{
    position: absolute;
    width: 98%;
    height: 300px;
    top: 898px;
    left: 14%;
}
.button{
    position: absolute;
    font-size: 1.5rem;
    top: 75%;
    left: 50%;
    transform: translate(-50%,-50%);
}
.btn{
    border: 1px solid black;
    padding: 15px 20px;
    color: green;
    text-decoration: none;
    transition: 00.6s ease;
}
.btn:hover{
    background-color: black;
    color: red;
}
.map img{
    position: absolute;
    top: 35%;
    left: 42%;
    width: 175px;
}
.accordion {
    background-color: #eee;
    color: #444;
    cursor: pointer;
    padding: 18px;
    width: 10%;
    text-align: right;
    border: none;
    outline: none;
    transition: 0.4s;
}
.accordion:hover {
    background-color: #ccc;
}

.panel {
    padding: 0 px;
    background-color: white;
    display: none;
    overflow: hidden;
}
.roadway{
    position: absolute;
    top: 257%;
    left: 0.1%;
    width: 09px;
}