html {
  box-sizing: border-box;
}

*,
*::before,
*::after {
  box-sizing: inherit;
}

* {
  margin: 0;
  padding: 0;
}

img {
  display: block;
  max-width: 100%;
  /* height: auto; */
}

body {
  font-family: 'Open Sans', sans-serif;
  font-size: 14px;
  line-height: 26px;
}

.container {
  width: 1100px;
  margin: 0 auto;
}
#gallery {
  display: flex;
  justify-content: space-between;
  list-style: none;
}

.gallery-list__item {
  margin-right: 20px;
  border-radius: 15px;
  overflow: hidden;
}

.gallery-list__item:hover,
.gallery-list__item:focus {
  transition: transform 250ms cubic-bezier(0.95, 0.01, 0.07, 0.53);
  transform: scale(1.05);
}

#validation-input {
  border: 3px solid #bdbdbd;
}

#validation-input.valid {
  border-color: #4caf50;
}

#validation-input.invalid {
  border-color: #f44336;
}