*{
    padding:0;
    margin:0;
    box-sizing:border-box;
}
nav{
    display: flex;
    width: 100%;
    background-color: rgb(0, 0, 0);
    overflow: hidden;
    align-items: center;
    justify-content: space-between;
    padding: 7px 50px 0 100px;
    flex-wrap: wrap;
  }
  nav .logo{
    color: #fff;
    font-size: 35px;
    font-weight: 600;
  }
  nav ul{
    display: flex;
    flex-wrap: wrap;
    list-style: none;
  }
  nav ul li{
    margin: 0 5px;
  }
  nav ul li a{
    color: #f2f2f2;
    text-decoration: none;
    font-size: 18px;
    font-weight: 500;
    padding: 8px 15px;
    border-radius: 5px;
    letter-spacing: 1px;
    transition: all 0.3s ease;
  }
  nav ul li a.active,
  nav ul li a:hover{
    color: #111;
    background: #fff;
  }
  nav .menu-btn i{
    color: #fff;
    font-size: 22px;
    cursor: pointer;
    display: none;
  }
  input[type="checkbox"]{
    display: none;
  }
  @media (max-width: 1000px){
    nav{
      padding: 0 40px 0 50px;
    }
  }
  @media (max-width: 920px) {
    nav .menu-btn i{
      display: block;
    }
    #click:checked ~ .menu-btn i:before{
      content: "\f00d";
    }
    nav ul{
      position: fixed;
      top: 80px;
      left: -100%;
      background-image: url("/img/black.jpg");
      height: 100vh;
      
      width: 51%;
      text-align: center;
      display: block;
      transition: all 0.3s ease;
    }
    #click:checked ~ ul{
      left: 0;
    }
    nav ul li{
      width: 100%;
      margin: 40px 0;
    }
    nav ul li a{
      width: 100%;
      margin-left: -100%;
      display: block;
      font-size: 20px;
      transition: 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    }
    #click:checked ~ ul li a{
      margin-left: 0px;
    }
    nav ul li a.active,
    nav ul li a:hover{
      background: none;
      color: cyan;
    }
  }
  .content{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: -1;
    width: 100%;
    padding: 0 30px;
    color: #1b1b1b;
  }
  .content div{
    font-size: 40px;
    font-weight: 700;
  }
  .logo{
    position: relative;
    height: 76px;
    align-self: auto;
    margin-left: -2.5vw;
  
  }
  
  .li{
    border-style: solid;
    border-color: white;
  }

body{
margin: 0;
padding: 0;
border: 50px;
background: url(bldrnr.jpg);
background-size: cover;
background-position: center;
font-family: sans-seriff;
}

.lgnbx{
width: 30rem;
height: 30rem;
background: #000;
color: #fff;
top: 50%;
left: 50%;
position: absolute;
transform: translate(-50%,-50%);
box-sizing: border-box;
border-radius: 20px;
padding: 70px 30px;

}

.avtr{  
width: 100px;
height: 100px;
border-radius: 50%;
position: absolute;
top: -50px;
left: calc(50% - 50px);
}

h1{
margin: 0;
padding: 0 0 20px;
text-align: center;
font-size: 22px;
}

.lginbx p{
margin: 0;
padding: 0;
font-weight: bold;
}

.lginbx input{
width: 100%;
margin-bottom: 0px;
}

.lginbx input[type="password"], input[type="text"], input[type="password"]{
border: none;
border-bottom: 1px solid #fff;
background: transparent;
outline: none;
height: auto;
width: 100%;
margin-bottom: 20px;
color: #fff;
font-size: 16px;
}

.lginbx input[type="submit"], input[type="submit"]{
border: none;
padding: 10px;
outline: none;
height: auto;
width: auto;
background: #fb2525;
color: #fff;
font-size: 18px;
border-radius: 5px;
float: inline-end;
cursor: pointer;
background: #ffc107;
color: #000;
}

form a{
font-size: 15px;
margin: 0px 10px 0px 0px;
width: 100%;
line-height: 20px;
color: darkgrey;
}