.buttonStartProject {
  background-color: #0d6efd;
  color: white;
  width: 50%;
  height: 4em;
  border: none;
  border-radius: 60px;
  margin-top: 40px;
  margin-bottom: 50px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  transition: color 0.6s;
}

.buttonStartProject::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background-color: white;
  transition: width 0.6s;
  z-index: 0;
}

.buttonStartProject:hover::before {
  width: 100%;
}

.buttonStartProject:hover {
  color: #0d6efd;
  transition: color 0.6s;
}

.buttonStartProject .textCSS {
  position: relative;
  z-index: 1;
  display: block;
}

@media only screen and (max-width: 500px) {
  .buttonStartProject {
    width: 100%;
  }
}

@media only screen and (min-width: 501px) and (max-width: 767px) {
  .buttonStartProject {
    width: 100%;
  }
}

@media only screen and (min-width: 768px) and (max-width: 1023px) {
  .buttonStartProject {
    width: 80%;
  }
}

@media only screen and (min-width: 1024px) and (max-width: 1919px) {
  .buttonStartProject {
    width: 60%;
  }
}