.header {
    background-image: linear-gradient(rgba(4, 9, 30, 0.411),rgba(4, 9, 30, 0.39)),url(pictures/start/titel_2.jpg);
    min-height: 100vh;
    width: 100%;
    background-position: center;
    background-size: cover;
    position: relative;
}
nav ul li a {
    color:rgb(255, 255, 255);

}
.checkbtn{

    color:rgb(255, 255, 255);

}
/*-------start_offer--------*/






.text-box{
    width:90%;
    color:white;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;

    animation-duration: 1s;
    animation-name:start_text-box;
}
@keyframes start_text-box{
    0%{
        left:-500px;
    }
    100%{
        left:50%;
    }
}
.text-box h1{
    font-size:62px;
}

.text-box p{
    margin: 10px 0 40px;
    font-size: 14px;
    color: #fff;
    padding:10px;
}
.hero-btn{

    text-decoration: none;
    color: white;
    border: 1px solid white;
    padding: 12px 34px;
    font-size: 13px;
    background: transparent;
    position: relative;
    cursor: pointer;
}
.hero-btn:hover{
    border: 1px solid #f44336;
    background: #f44336;
    transition: 1s;
}
/*start-offer*/

.headline{
    text-align: center;
    margin:30px;
    font-size:110%;
}
.start_offers{
    text-align:center;
    font-size:26px;
    padding-bottom:20px;
}
.offer_start {
    position: relative;
    width: 40%;
    justify-content: center;
    display:flex;
    align-items: center;
    left:30%;
    padding-top:25px;
  }
  
  .image {
    opacity: 1;
    border-radius:15px;
    width: 100%;
    height: auto;
    transition: .5s ease;
    backface-visibility: hidden;
  }
  
  .middle {
    transition: .5s ease;
    opacity: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    text-align: center;
    font-size:90%;
  }
  
  .offer_start:hover .image {
    opacity: 0.6;
  }
  
  .offer_start:hover .middle {
    opacity: 1;
  }
  
  .text {
    background-color: #ff6565;
    color: rgb(255, 255, 255);
    font-size: 16px;
    padding: 16px 32px;
  }





@media (max-width: 1100px){
    .text-box h1{
        font-size:20px;
    }
}
@media(max-width: 700px){

    .headline{
        padding-top:90px;
    }
    .logo img{
        width: 100px;
        height:100px;
    }
    .text-box h1{
        font-size:20px;
    }
    label.logo {
        padding-left:5px;
    }
    .text-box p{
        margin: 0px 0 15px;
        font-size: 14px;
        color: #fff;
    }
}
@media(max-width: 350px){
    .logo img{
        width: 75px;
        height:75px;
    }
    .text-box h1{
        font-size:10px;
    }
    .text-box{
        top:30%;
    }


}
@media(max-width: 900px){



    .offer_start {
        width: 100%;
        left:0%;
    }
}