index.css

body{
    background: #000000;
}
/*inicio cabeçalho*/
header{
    background: #000000;
    
    
}
header img{
    width: 75px; 
}
header h1{
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    text-transform: uppercase;
    font-weight: bolder;
    color: #ffffff;
    position: absolute;
    top:28px;
    left: 90px;
}
.nav{
    color: #ffffff;
    position: absolute;
    top:25px;
    left: 41%;
    font-weight: bolder;
    
}
nav li{
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: inline;
    margin: 0 0 0 15px; 
   
}
nav a{
    text-decoration:none;
    color:#FFFFFF;
    font-size: 18px;
}
nav a:hover{
    color: #12f09b;
    
}

#btn{
    position: absolute;
    top:10px;
    right: 20px;

}
#btnr {
    padding: 10px 20px;
    text-transform: uppercase;
    border-radius: 8px;
    font-size: 17px;
    font-weight: 300;
    color: #ffffff80;
    text-shadow: none;
    background: transparent;
    box-shadow: transparent;
    border: 1px solid #ffffff80;
    transition: 0.5s ease;
    user-select: none;
  }
  
  #btn:hover {
    color: #ffffff;
    background: #12f09b;
    border: 1px solid #12f09b;
    text-shadow: 0 0 5px #ffffff,
                0 0 10px #ffffff,
                0 0 20px #ffffff;
    box-shadow: 0 0 5px #12f09b,
                0 0 20px #12f09b,
                0 0 50px #12f09b,
                0 0 100px #12f09b;
  }
#btnr{
    position: absolute;
    top:10px;
    right: 215px;

}
#btn {
    padding: 10px 20px;
    text-transform: uppercase;
    border-radius: 8px;
    font-size: 17px;
    font-weight: 300;
    color: #ffffff80;
    text-shadow: none;
    background: transparent;
    box-shadow: transparent;
    border: 1px solid #ffffff80;
    transition: 0.5s ease;
    user-select: none;
  }
  
  #btnr:hover {
    color: #ffffff;
    background: #12f09b;
    border: 1px solid #12f09b;
    text-shadow: 0 0 5px #ffffff,
                0 0 10px #ffffff,
                0 0 20px #ffffff;
    box-shadow: 0 0 5px #12f09b,
                0 0 20px #12f09b,
                0 0 50px #12f09b,
                0 0 100px #12f09b;
  }
/*final cabeçalho*/
.X{
    background: #000000;
    height: 565px;
}
#formulario{
    width: 940px;
    margin:0 auto;
    text-align: center;
    
    
    
}
.input {
  width: 400px;
  margin:5px 40px 5px 40px;
  font-family: -apple-system,BlinkMacSystemFont,"Segoe UI","Roboto","Oxygen","Ubuntu","Cantarell","Fira Sans","Droid Sans","Helvetica Neue",sans-serif;
  font-weight: 500;
  font-size: 15px;
  color: #eeeaea;
  background-color: transparent;
  box-shadow: 0 0 .4vw rgba(0,0,0,0.5), 0 0 0 .15vw transparent;
  border-radius: 0.4vw;
  border: none;
  outline: none;
  padding: 10px;
  transition: .4s;
}

.input:hover {
  box-shadow: 0 0 0 .15vw rgba(135, 207, 235, 0.186);
}

.input:focus {
  box-shadow: 0 0 0 2px #12f09b;
  transition: 1s;
}
.out{
    width:275px;
    border:solid 2px;
    border-color: #12f09b;
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    color: #ffffff;
    margin: 20px 0 0 20px;
    padding: 0 0 0 8px;
}
#esp{
    width:250px;
    height:250px;
    
}
.out h1{
    margin: 10px 0;
    text-transform: uppercase;
    font-size: 22px;
    font-weight: bolder;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
.out h2{
    margin: 20px 0;
    font-size: 16px;
    font-weight: bolder;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
#butt {
    margin: 8px auto;
    width: 150px;
    padding: 8px 8px;
    text-transform: uppercase;
    border-radius: 8px;
    font-size: 17px;
    font-weight: 300;
    color: #ffffff80;
    text-shadow: none;
    background: transparent;
    box-shadow: transparent;
    border: 1px solid #ffffff80;
    transition: 0.5s ease;
    user-select: none;
  }
#butt:hover{
    background: #12f09b;
    color: #eeeaea;
}
/*final main*/
footer{
    background: #000000;

}
.A{
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: inline;
    margin: 0 0 0 15px; 
    text-align: center;
}
.I{
    width: 30px;
}
#F{
    width: 940px;
    margin: 0px auto;
    text-align: center;
}
#P{
    color: #FFFFFF;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-weight: bold;
    margin: 8px 0;
}