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

body,
html {
  margin: 0;
  padding: 0;
  font-family: Tahoma, sans-serif;
}

:root {
  --color-primary: #fff;
  --color-secondary: #000;
  --background-color-primary: #1f618d;
  --btn-color-primary: #5cb85c;
  --background-color-secondary: ;
}

.container {
  width: 100%;
  max-width: 1024px;
  margin-inline: auto;
  padding: 0 15px;
}

.row {
  display: flex;
  flex-wrap: wrap;
}

.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.col {
  width: 100%;
}

.flex-center {
  align-items: center;
  justify-content: center;
}

.gap-20 {
  gap: 20px;
}

h1 {
  color: var(--color-primary);
  font-size: 34px;
  font-weight: 700;
  margin: 0;
}

.d-flex {
  display: flex;
}

.card {
  background-color: #fff;
  padding: 20px;
  border-radius: 10px;
  border: 1px solid #f9f9f9;
  font-weight: 700;
  text-align: center;
  box-shadow: rgba(50, 50, 93, 0.25) 0px 50px 100px -20px, rgba(0, 0, 0, 0.3) 0px 30px 60px -30px;
}

.form-input {
  width: 100%;
  font-size: 16px;
  color: #333;
  padding: 20px;
  transition: all 0.2s;
  box-shadow: none;
  border: 1px solid #eee;
  background: #f9f9f9;
}

.btn {
  cursor: pointer;
  outline: none;
  border: none;
}

.btn-primary {
  background-color: var(--btn-color-primary);
  color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary);
  color: var(--btn-color-primary);
  box-shadow: var(--btn-color-primary) 0px 1px 2px 0px, rgba(60, 64, 67, 0.15) 0px 1px 3px 1px;
}

.shadow {
  box-shadow: rgba(50, 50, 93, 0.25) 0px 50px 100px -20px, rgba(0, 0, 0, 0.3) 0px 30px 60px -30px;
}

footer {
  border-top: 2px solid var(--background-color-primary);
  padding: 20px 0;
}

/* HELPERS */
.d-block {
  display: block;
}
.mb-0 {
  margin-bottom: 0;
}
.my-4 {
  margin-block: 20px;
}

.mb-2 {
  margin-bottom: 10px;
}

.mb-3 {
  margin-bottom: 15px;
}

.mb-5 {
  margin-bottom: 50px;
}

.py-5 {
  padding-block: 25px;
}

.px-3 {
  padding-inline: 15px;
}

.px-4 {
  padding-inline: 10px;
}

.px-5 {
  padding-inline: 25px;
}

.bg-primary {
  background-color: var(--background-color-primary);
}

.bg-secondary {
  background-color: var(--background-color-secondary);
}

.fill-primary {
  fill: var(--background-color-primary);
}

.text-primary {
  color: var(--color-primary);
}

.text-center {
  text-align: center;
}

.text-lg {
  font-size: 28px;
}

@media only screen and (min-width: 768px) {
  .cards {
    grid-template-columns: 1fr 1fr 1fr;
  }
  .container.container-fluid {
    max-width: 100%;
    padding: 0;
  }
  .col-3 {
    flex: 0 1 auto;
    width: 31.9%;
  }
  .text-lg {
    font-size: 36px;
  }
  h1 {
    font-size: 48px;
  }

  .my-4 {
    margin-block: 40px !important;
  }

  .mb-2 {
    margin-bottom: 20px !important;
  }

  .py-5 {
    padding-block: 50px !important;
  }

  .px-3 {
    padding-inline: 30px !important;
  }

  .px-4 {
    padding-inline: 40px !important;
  }

  .px-5 {
    padding-inline: 50px !important;
  }
}