*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
html{
    font-size: 1em;
    text-transform: uppercase;
    
}
body {
    background: url(images/background_white_00000.png);
    background-position: center;
    background-size: cover;
    background-repeat:no-repeat;
    height: 100vh;
    overflow: hidden;

    }
header{
    background: #fff;
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    padding: 25px 5%;
    padding-left: 0;
    margin-left: -10px;
    box-shadow: 1px 2px 15px rgba(0,0,0,.2);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 1.5rem;
    font-weight: 600;
    cursor: pointer;
    letter-spacing: 0.7rem;
    margin-left:-40px;
}
nav a {
    position: relative;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 400;
    color: #000;
    margin-left: 1.5rem;
    padding: 0.8rem;
    transition: 0.4s;
    border-radius: 3px;
}
nav a:hover {
    background-color: #423E37;
    color: #EDEBD7;
}

#chek {
    display: none;
}
label img {
    display: none;
}
section {
   
    
    width: 85%;
    height: 85%;
    top: 20%;
    z-index: -1;
}
.big-container{
    display: flex;
    position: relative;
    margin: auto;
}

.felirat{
    color: #fff;
    width: 90%;
    height: 80%;
    background: #000;
    opacity: 80%;
    padding: 30px;
    font-size: 1.1rem;
    font-weight: 400;
    border-radius: 10px;
    box-shadow: 4px 4px 15px rgba(0,0,0,1);
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.footer {
    position: fixed;
    background: #000;
    opacity: 70%;
    color: #fff;
    text-align: center;
    left: 0;
    bottom: 0;
    width: 100%;
    text-align: center;
}

.footer p {
    margin: 0;
    padding: 8px;
    font-size: .8em;
}
.textbox {
    line-height: 1.6;
}

@media(max-width:1099px){
    header {
        padding: 20px 3%;
    }
    .logo {
        font-size: 1.3rem;
    }
    nav a {
        font-size: 0.7rem;
        padding: 0.5rem;
    }
}
@media(max-width: 900px){
    body {
       overflow: auto; 
    }
    
    nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        box-shadow: 2px 4px 20px rgba(0,0,0,.5);
        padding: 0px;
        height: 0px;
        overflow: hidden;
        background: #fff;
        z-index: 100;
    }
    nav a {
        display: block;
        text-align: center;
        margin-top:20px;
        margin-left: 10px;
        padding: 1rem;
       
    }
    #chek:checked ~ nav {
        height: 370px;
    }
    label img{
        display:block;
    }
    .big-container {
        display: flex;
        flex-wrap: wrap;
    }
    .felirat {
        margin-bottom: 20px;
        width: 100%;
        font-size: 1em;
    }
    section {
        justify-content: center;
        height: 80%;
    }
   
   
}
@media(max-width: 600px){
    .felirat {
        font-size: .8em;
    } 
}

@media(max-width: 300px){
    .felirat {
        font-size: .6em;
    } 
}