* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 62.5%;
}

body {
    background: #2B292E;
    color: #fafafa;
    font-family: Helvetica, Arial, sans-serif;
    font-size: 1.6rem;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    position: relative;
}

.header {
   position: fixed;
   left: 40%;

   
}
.header__box {
    position: fixed;
    top:150px;
  display:block;
    width:100%; 
 
}
 .modal--btn {
     font-size: 2.5rem;
    background-color: #603a88;
    text-decoration: none;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: block;
    line-height: 2.0;
    color:#fff;
    cursor: pointer;
    border:0;
    animation: pulse 3s infinite; 

}
.modal--btn:focus {
    border:0;
    outline: none;
}
.modal {
    position: fixed;
    left:0;
    top: 0;
    width:100%;
    height: 100%;
    background-color: rgba(127, 44, 204, 0.514);
    /* opacity: 0; */
    z-index: 1;
    display:none;
    transform:scale(1.1);
    transition: visibility 0s linear 0.25s, opacity 0.25s 0s, transform 0.25s;
}
.modal__content {
    position: absolute; 
    top:50%;
    left: 50%; 
    transform: translate(-50%, -50%);
    background-color: #ffffff;
    max-width: 600px;
    padding: 1rem 1.5rem;
    width: 80%;
    border-radius: .5rem;
    color:rgb(79, 18, 119);
}
.btn--close {
    float: right;
    width:1.5rem;
    line-height: 2.1rem;
    text-align: center;
    cursor: pointer;
    border-radius: 1.25rem;
    background-color: #777;
    color:#fff;
  
    width:25px;

}
.btn--close:hover {
    background-color: #603a88;

}
.show-modal {
    opacity:1;
    visibility: visible;
    transform: scale(1.0);
    transition: visibility 0s linear 0s, opacity .25s 0s, transform 0.25s;
}
@-webkit-keyframes pulse {
    0% {
      -webkit-box-shadow: 0 0 0 5px rgba(132, 44, 204, 0.4);
    }
    70% {
        -webkit-box-shadow: 0 0 0 10px rgba(127, 44, 204, 0);
    }
    100% {
        -webkit-box-shadow: 0 0 0 0 rgba(145, 44, 204, 0);
    }
  }
  @keyframes pulse {
    0% {
      -moz-box-shadow: 0 0 0 5px rgba(132, 44, 204, 0.4);
      box-shadow: 0 0 0 5px rgba(132, 44, 204, 0.4);
    }
    70% {
        -moz-box-shadow: 0 0 0 15px rgba(127, 44, 204, 0);
        box-shadow: 0 0 0 15px rgba(127, 44, 204, 0);
    }
    100% {
        -moz-box-shadow: 0 0 0 0 rgba(145, 44, 204, 0);
        box-shadow: 0 0 0 0 rgba(145, 44, 204, 0);
    }
  }
span {
    border-bottom: 1px solid #534f59;
    display: inline-block;
    font-size: 2rem;
    height: 2.4rem;
    line-height: 2.4rem;
    margin: 0 .1rem;
    text-align: center;
    text-transform: uppercase;
    width: 2.4rem;
}

p {
    font-weight: 300;
    margin-bottom: .8rem;
}

.puzzle {
    display: flex;
    margin-bottom: 4.8rem;
}

.button {
    background: #7044a0;
    border: none;
    border-bottom: 2px solid #603a88;
    cursor: pointer;
    color: white;
    font-size: 1.4rem;
    font-weight: 300;
    padding: .8rem;
    transition: background .3s ease, color .3s ease;
}

.button:hover {
    background: #5F3A87;
}