:root {
  --gradient-grey: #f5f5f5;
  --white: #fff;
  --link-blue: #377dff;
  --font-base: #677788;
  --font-color-dark: #1e2022;
  --bg-banner: #eceff8;
  --sketch-color-button: #00c9a6;

  --size-10: 0.625rem;
  --size-14: 0.875rem;
  --size-15: 0.938;
  --size-16: 1rem;
  --size-18: 1.125rem;
  --size-20: 1.25rem;
  --size-28: 1.75rem;
  --size-30: 1.875rem;
  --size-40: 2.5rem;
  --size-50: 3.125rem;
  --size-100: 6.25rem;
  --size-150: 9.375rem;
}

html {
  scroll-behavior: smooth;
  transition: ease-in-out 0.3s;
}

body {
  font-family: "Open Sans", sans-serif;
  font-weight: 400;
  font-size: var(--size-14);
  line-height: 1.6;
  letter-spacing: 0;
  color: var(--font-base);
  margin: 0;
  padding: 0;
  
}

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

ul {
  padding: 0;
  margin: 0;
  list-style: none;
}

a {
  text-decoration: none;
}

p {
  margin-top: 0;
}
h2 {
  font-size: var(--size-28);
  font-weight: 600;
  line-height: 1.2;
  
}

img {
  width: 100%;
  max-width: 100%;
  vertical-align: middle;
  border-style: none;
}

.container {
  width: 100%;
  padding-left: var(--size-15);
  padding-right: var(--size-15);
  margin-left: auto;
  margin-right: auto;
}

.btn {
  display: inline-block;
  font-weight: 600;
  color: var(--font-color-dark);
  text-align: center;
  cursor: pointer;
  user-select: none;
  background-color: transparent;
  border: 1px solid transparent;
  padding: 0.377rem 0.75rem;
  border-radius: 1.25rem;
  transition: ease-in-out 0.3s;
}
.btn-primary:hover {
  background-color: #3e77e3;
}

.btn-primary {
  
  background-color: var(--link-blue);
  transition: ease-in-out 0.3s;
  color: var(--white);
  padding: 0.4375rem 1.5625rem;
}

.btn-form {
    background-color:var(--link-blue);
    transition: ease-in-out 0.3s;
    color: var(--white);
    border-radius:5px;
    padding:0.625rem 9.375rem;
  
}
.btn-form:hover {
  background-color: #3e77e3;
}

@media (min-width:1200px) {
  .container {max-width: 1140px;}
}