* {
    box-sizing: border-box;
}

html, body {
    font-family: 'Open Sans', sans-serif;
    height: 100%;
    margin: 0;
  background: url("https://raw.githubusercontent.com/Vladusyk/Homework-Vladus/main/894c1b84040b8f9515817f921a2f36ec407ebdc8.jpeg");
  background-size: cover;
}

.box {
    width: 100%;
    padding-right: 15px;
    padding-left: 15px;
    margin: auto;
}

.landing {
    position: relative;
    background-color: transparent;
}

.landing .header {
    display: inline;
    padding: 10px 0 0;
    position: relative;
}


.landing .header .links {
    display: inline;
    padding: 0;
    margin: 0;
    width: 100%;
    text-align: right;
}

.landing .header .links li {
    display: inline-block;
    margin-left: 5px;
    cursor: pointer;
}

.landing .header .links li:last-child {
    border: 0;
    border-radius: 20px;
    padding: 10px 18px;
    color: #FFF;
    background-color: #6c63ff;
    font-size: 18px;
}

.landing .info {
    width: 100%;
    float: left;
    margin-top: 130px;
}

.landing .info h1 {
    font-size: 44px;
    margin: 0 0 20px;
    line-height: 1.4;
    color: white;
}

.landing .info p {
    margin: 0;
    line-height: 1.6;
    font-size: 15px;
    color: white;
}

.landing .info button {
    border: 0;
    border-radius: 20px;
    padding: 12px 30px;
    margin-top: 30px;
    cursor: pointer;
    color: #FFF;
    background-color: #6c63ff;
}

.clearfix {
  clear: both;
}

.container {
  display: block;
  color: transparent;
  margin: 0 auto;
  text-align: center;
}

h2 {
  font-weight: normal;
  letter-spacing: .125rem;
  text-transform: lowercase;
  color: yellow;
}

li {
  display: inline-block;
  font-size: 1.5em;
  list-style-type: none;
  padding: 1em;
  text-transform: lowercase;
  color: yellow;
  font-size: 18px;
}

li span {
  display: block;
  font-size: 4.5rem;
}


@media all and (max-width: 768px) {
  h2 {
    font-size: calc(1.5rem * var(--smaller));
  }
  
  li {
    font-size: calc(1.125rem * var(--smaller));
  }
  
  li span {
    font-size: calc(3.375rem * var(--smaller));
  }
}
    
/* spoiler */
button:focus {
  outline: none;
}


#spoiler_button {
 border: 0;
    border-radius: 20px;
    padding: 10px 18px;
    color: #FFF;
    background-color: #6c63ff;
    font-size: 18px;
}

#spoiler_button:hover {
border: 0;
    border-radius: 20px;
    padding: 10px 18px;
    color: #FFF;
    background-color: white;
    font-size: 18px;
}

#spoiler_button:active {
  border: 0;
    border-radius: 20px;
    padding: 10px 18px;
    color: #FFF;
    background-color: white;
    font-size: 18px;
}

  .fadein, .fadeout {
  height: 0;
  -moz-transition: opacity 1s ease-in-out;
  -o-transition: opacity 1s ease-in-out;
  -webkit-transition: opacity 1s ease-in-out;

  opacity: 0;  
}

.fadein {
  height: 100%;
  opacity: 1;
 
}

#additional p {
    margin: 0;
    line-height: 1.6;
    font-size: 15px;
    color: yellow;

    }