a {text-decoration: none; border: none; outline: none; color: #000;}
img {border: none;}
* {margin: 0; padding: 0;}

HTML { }
	
Body {
	width: 600px;
	margin: auto;
	background-color: #f4f2e8;
	color: #000;
		
}	
	
@font-face { 
    font-family: 'MuseoSansCyrl900';
    src: url(MuseoSansCyrl/MuseoSansCyrl900.eot),
    url(MuseoSansCyrl/MuseoSansCyrl900.woff) format('woff'),
    url(MuseoSansCyrl/MuseoSansCyrl900.ttf) format('truetype');
    font-style: normal;
    font-weight: 500;
}

@font-face { 
    font-family: 'MuseoSansCyrl700';
    src: url(MuseoSansCyrl/MuseoSansCyrl700.eot),
    url(MuseoSansCyrl/MuseoSansCyrl700.woff) format('woff'),
    url(MuseoSansCyrl/MuseoSansCyrl700.ttf) format('truetype');
    font-style: normal;
    font-weight: 500;
}

@font-face { 
    font-family: 'MuseoSansCyrl500';
    src: url(MuseoSansCyrl/MuseoSansCyrl500.eot),
    url(MuseoSansCyrl/MuseoSansCyrl500.woff) format('woff'),
    url(MuseoSansCyrl/MuseoSansCyrl500.ttf) format('truetype');
    font-style: normal;
    font-weight: 500;
}

@font-face { 
    font-family: 'MuseoSansCyrl300';
    src: url(MuseoSansCyrl/MuseoSansCyrl300.eot),
    url(MuseoSansCyrl/MuseoSansCyrl300.woff) format('woff'),
    url(MuseoSansCyrl/MuseoSansCyrl300.ttf) format('truetype');
    font-style: normal;
    font-weight: 300;
}

@font-face { 
    font-family: 'MuseoSansCyrl100';
    src: url(MuseoSansCyrl/MuseoSansCyrl100.eot),
    url(MuseoSansCyrl/MuseoSansCyrl100.woff) format('woff'),
    url(MuseoSansCyrl/MuseoSansCyrl100.ttf) format('truetype');
    font-style: normal;
    font-weight: 100;
}

#empty10 {width: 100%; height: 10px;}
#empty20 {width: 100%; height: 20px;}
#empty50 {width: 100%; height: 50px;}
#empty100 {width: 100%; height: 100px;}

.button-buy {
    border: 1px solid #000;
	background-color: #000; 
    color: #fff;
    padding: 0.6rem 1.2rem 0.6rem 1.2rem;
	font-family: 'MuseoSansCyrl500';
	text-transform: uppercase;
	border-radius: 5px;
	letter-spacing: 0.1rem;
}

.button-buy:hover {
    border: 1px solid #000;
	background-color: #f4f2e8; 
    color: #000;
    padding: 0.6rem 1.2rem 0.6rem 1.2rem;

	font-family: 'MuseoSansCyrl500';
	text-transform: uppercase;
	cursor: pointer;
	border-radius: 5px;
	letter-spacing: 0.1rem;
}

#lines {
	margin: 10px 10px 10px 40px;
  border-bottom: 12px double #202020;
  border-top: 4px solid #202020;
  content: "";
  height: 4px;
  width: 30px;
  box-sizing: unset;
  display: inline-block;
  vertical-align: middle;
}

ul { padding-left: 60px;}
li { list-style-type: disc; padding-top:20px;}

summary {
    list-style: none;
}

.details {
  position: relative;
  right: 0px;
  display: block;
  max-width: 520px;
  background: rgba(255,255,255,0.5);
  border-radius: 5px;
  transition: 0.3s;
  overflow: hidden;
}

.details::after {
  z-index: 12;
  position: absolute;
  right: 24px;
  top: 4px;
  content: "";
  display: block;
  width: 14px;
  height: 14px;
  border-right: 3px solid #000;
  border-bottom: 3px solid #000;
  transform: rotate(-45deg);
  transform-origin: center;
  transition: .3s;
}

.details[open]::after {
  transform: rotate(45deg);
}

.details[open] .details__content {
  margin-top: 0;
}