@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@300&display=swap');

* {
  margin: 0;
  padding: 0;
  outline: none;
}

body, html {
  width: 100%;
  height: 100%;
}

body {
  background-color: #fafafa;
  font-family: 'Open Sans', sans-serif;
}

/* Шапка сайта */

header {
  width: 100%;
  padding: 10px 0.5% 0px 0.5%;
  background: transparent;
  float: left;
  position: fixed;
}

header #logo {
  color: #fff;
  cursor: pointer;
}

header #logo span {
  font-size: 1.7em;
  line-height: 45px;
  margin-left: 40px;
  font-family: 'Open Sans', sans-serif;
    text-decoration: none;
    font-weight: 700;
}
	

@media (min-width: 701px) {
  #logo {
    float: left;
    width: 30%;
    font-size: 1.1em;
  }

  #about {
    float: right;
    width: 67%;
  }
}

@media (max-width: 700px) {
  #logo {
    margin-top: 15px;
    width: 100%;
    font-size: 1.5em;
  }

  #about {
    float: left;
    width: 100%;
  }
}

#about {
text-decoration: none;
  text-align: center;
  font-size: 1em;
  line-height: 40px;
  margin-bottom: 10px;
}

#about > a {color: #fff}

#about > a:hover {
  color: #b0b0b0;
  text-decoration: none;
}

#about > a:not(:last-child) {
  margin-right: 7%;
}

/* Стили для фиксированной шапки */

.fixed {
  z-index: 5000;
  background-color: #fff;
  border-bottom: 1px solid silver;
}

header.fixed #logo {
  color: #343434;
}

.fixed #about a {color: #343434}
.fixed #about a:hover {color: #7c7c7c}

/* Главный блок на сайте */

#top {
  width: 100%;
  background-image: url(https://media.discordapp.net/attachments/938395178320949288/939178214947950654/png.png);
  background-blend-mode: multiply;
  background-color: #2e3a44;
  background-size: cover;
  text-align: center;
  color: #fff;
}

@media (min-width: 1001px) {
  #top {
    font-size: 3em;
    height: 1000px;
  }
}

@media (max-width: 1000px) and (min-width: 651px) {
  #top {
    font-size: 2em;
    height: 600px;
  }
}

@media (max-width: 650px) {
  #top {
    font-size: 1.3em;
    padding-top: 50%;
    height: 500px;
  }
}

@media (max-width: 450px) {
  #top {
    font-size: 0.9em;
  }
}

#top h1 {
  padding-top: 20%;
}

#top h3 {
  color: #ccc;
}

/* Блок с возможностями */

#main {
  float: left;
  background-color: #f6f6f6;
  border-top: 2px solid silver;
  color: #484848;
  font-size: 1.3em;
}

@media (min-width: 1401px) {

}

@media (max-width: 1400px) {
  #main {
    padding: 100px 10%;
    width: 80%;
  }
}

@media (max-width: 700px) {
  #main div {
    width: 98%!important;
    margin-bottom: 20px;
  }
}

#main div {
  width: 48%;
  margin-right: 2%;
  float: left;
}

#main h2 {font-size: 3em}
#main span {color: #a0a0a0}

/* Блок с преимуществами */

#overview {
  float: left;
  background-image: url(Nikson.png);

  background-blend-mode: multiply;
  background-color: #403f40;
  background-size: cover;
  background-attachment: fixed;
  padding: 100px 0;
  width: 100%;
  text-align: center;
  color: #fff;
}

#overview h2 {font-size: 4em}
#overview h4 {color: #ccc; font-size: 1.5em}

@media (min-width: 561px) {
  #overview h2 {font-size: 4em}
}

@media (max-width: 560px) {
  #overview h2 {font-size: 2em}
}

#overview .img {
filter: invert(0);
  float: left;
  width: 30%;
  margin-right: 5%;
  margin-top: 50px;
}

#overview .img:nth-child(odd) {
  margin-left: 18%;
}

#overview img {
  background: #fafafa;
  padding: 5px;
  border: 2px solid silver;
  float: left;
  width: 100%;
  max-width: 500px;
}

#overview span {
  float: left;
  width: 100%;
  font-size: 2em;
  margin-top: 10px;
}

@media (max-width: 700px) {
  #overview .img {
    width: 80%!important;
    margin-right: 0!important;
    margin-left: 10%!important;
  }
}

/* Блок с контактами */
#contacts {
  width: 100%;
  float: left;
  padding-bottom: 40px;
  padding-top: 70px;
  border-top: 4px solid #ccc;
  background: #f4f4f4;
}

h1, h2, h3, h4, h5 {
  font-family: 'Roboto Slab', serif;
  font-weight: lighter;
}

#contacts h5 {font-size: 3em; color: #4f4f4f}

#form_input {
  margin-top: 15px;
  font-size: 1.1em;
}

@media (min-width: 1051px) {
  #form_input {
    width: 35%;
    margin-left: 38%;
  }
}

@media (max-width: 1050px) {
  #form_input {
    width: 90%;
    margin-left: 10%;
  }
}

#form_input label {
  color: #505050;
  cursor: pointer;
  font-size: 1.4em;
  font-family: 'Roboto Slab', serif;
}

#form_input label > span {
  color: #e87e7e;
}

#form_input input,#form_input textarea {
  margin-bottom: 10px;
  width: 70%;
  padding: 10px 2%;
  border-radius: 7px;
  border: 2px solid silver;
  font-size: 0.9em;
  color: #4a4a4a;
}

#form_input input:focus, #form_input textarea:focus {
  border-color: #333;
}

.btn {
  float: left;
  border-radius: 5px;
  padding: 5px 9px;
  font-size: 1.2em;
  background-color: #ec6550;
  text-shadow: #454545 0 0 2px;
  cursor: pointer;
  color: white;
  font-family: 'Roboto Slab', serif;
}

.btn:hover {
  background-color: #c15443;
}

.button {
    color: #fff;
    text-decoration: none;
      font-family: 'Open Sans', sans-serif;
    font-size: 32px;
    font-weight: 700;
    transition: color 1s linear;
    
}

.button:hover {
    color: #000;
}
.big_text {
       font-family: 'Open Sans', sans-serif;
}
.img {
    align-items: center;
}

.logo {
    filter: invert(1);
    height: 25%;
    width: 25%;
}