reset.css

// ----- Base Reset
// ----------------------------------------------------
* {
  box-sizing: border-box;
}
html {
  line-height: 1.25;
}

// Define the "system" font family
@font-face {
  font-family: system;
  font-style: normal;
  font-weight: 300;
  src: local(".SFNSText-Light"),
    local(".HelveticaNeueDeskInterface-Light"),
    local(".LucidaGrandeUI"),
    local("Ubuntu Light"),
    local("Segoe UI Light"),
    local("Roboto-Light"),
    local("DroidSans"),
    local("Tahoma");
}

html,
body,
h1,
h2,
h3,
h4,
h5,
h6,
ol,
ul,
li,
p {
  font-family: "system"; // system font
  margin: 0;
  padding: 0;
}

ol,
ul {
  list-style-type: none;
}


img,
video {
  max-width: 100%;
  width: 100%;
}