* {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

.clearfix:after {
    content: "";
    display:block;
    clear: both;
}

html {
    min-width: 100px;
}

html, body {
    margin: 0;
    padding: 0;
    font-family: Arial,sans-serif;
    font-size: 14px;
    line-height: 1.4;
    color: #333;
    background-color: #ededed;
}

.header, .content-wrapper, .container, .content, .footer {
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flex;
    display: -o-flex;
    display: flex;
    flex-direction: row;
    justify-content: center;
}

.content-wrapper {
    margin: 0 auto;
    flex-direction: column;
    min-width: 100px;
    max-width: 2000px;
}

.container {
    flex-wrap: nowrap;
}

.content {
    width: 100%;
    flex-direction: column;
    flex: 1 1 auto;
    order: 0;
}

.logo {
    border: 1px solid black;
    border-radius: .6em .6em .6em 0;
    padding: 0.2em .5em;
    font-size: 3em
}




.promo__list {
  display:grid;
  grid-gap: 20px;
  grid-auto-flow: column;
  grid-template-columns: auto-fill;
  grid-template-rows: auto-fit;
  list-style: none;
  margin: 0 auto;
  padding: 10px;
  max-width: 600px
}

.promo__item {
  padding: 20px;
  background: white;
  border-radius: 20px
}

.promo__h {
  margin: 0
}

.promo__strong {
  display: inline-block;
  font-size: 40px;
  padding: 10px;
  background: white;
  border: 1px solid black;
  border-radius: 10px;
}

.promo__strong::before {
  content: "Промокод";
  display: block;
  font-size: 10px;
  margin-bottom:0px
}