:root {
  --primary-color: #403b3b;
  --secondary-color: #7d7373;
  --third-color: #7f8551;
  --fourth-color: #e7e7e7;
}

.btn {
  background-color: var(--third-color);
  color: #fff;
  border-radius: 3px;
  padding: 10px 20px;
  font-size: 1.2rem;
  box-shadow: 2px 5px 5px var(--secondary-color);
}

.btn:hover {
  opacity: 0.8;
  cursor: pointer;
}

/* Background Items */
.bg-medium {
  background-color: var(--fourth-color);
}

/* Flex-Items */

.flex-items {
  display: flex;
  justify-content: space-evenly;
  text-align: center;
}

/* Column Items */
.column-items {
  display: flex;
  flex-direction: column;
}

/* Section Title */
.section-title {
  font-weight: 400;
  font-size: 3rem;
  text-align: center;
  margin: 20px 0;
}

.portfolio-items {
  display: flex;
  flex-wrap: wrap;
  padding: 0 4px;
  justify-content: center;
  padding: 0 4px;
  flex: 1;
}

.flex-grid .row {
  display: flex;
  flex-wrap: wrap;
  padding: 0 4px;
}

.flex-grid .column {
  flex: 25%;
  max-width: 25%;
  padding: 0 4px;
}

.section-padding {
  padding: 20px 20px 40px;
}