HTML & Style

input[type='submit'] {
  background-color: #9b4dca;
  border: 0.1rem solid #9b4dca;
  border-radius: 10px;
  color: #fff;
  cursor: pointer;
  display: inline-block;
  font-size: 1.1rem;
  font-weight: 700;
  height: 3.8rem;
  letter-spacing: 5px;
  line-height: 3.8rem;
  padding: 0 3.0rem;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
}

css
https://docs.google.com/presentation/d/13bZzZ6_4ahmD20ixThpISPWa-Uzcu8mjG6ktDDAZTOM/
https://www.w3schools.com/css/css3_shadows.asp
https://www.w3schools.com/css/css3_images.asp
background-color
color
https://www.w3schools.com/css/tryit.asp?filename=trycss_color_bg
text-decoration
text-align
text-weight
font-family
https://www.w3schools.com/css/tryit.asp?filename=trycss_font-family
font-size
border-radius
https://www.w3schools.com/css/css3_borders.asp
height
width
column-count
https://www.w3schools.com/css/tryit.asp?filename=trycss3_column-count

padding
padding-top
padding-left
margin
https://www.w3schools.com/css/tryit.asp?filename=trycss3_mask-image